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Royal Catnip Crimson

#e4213f
Notes

Royal Catnip Crimson (#E4213F) is a true red with a vibrant character. It holds its own as a focal accent, carrying visual weight without tipping into neon territory. Its HSL profile (351°, 78%, 51%) places it in the highly saturated band at a mid lightness. Best used in small doses, like logos, CTAs, focus rings, or highlight text, where its saturation becomes a feature rather than noise. For a confident two-color system, pair it with its complementary teal. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#e4213f
RGB
rgb(228, 33, 63)
HSL
hsl(351, 78%, 51%)
HWB
hwb(351 13% 11%)
OKLCH
oklch(59.2% 0.223 20.9)
P3
color(display-p3 0.8214 0.2222 0.2708)
HSV
hsv(351, 86%, 89%)
LAB
lab(49.43% 70.95 35.03)
LCH
lch(49.43% 79.12 26.28)
CMYK
cmyk(0%, 86%, 72%, 11%)

Etymology

Royal
noun

The blue of European royal court dress and regalia from the late seventeenth century forward — the color of British peers' robes, French royal sashes, the lining of the crown-jewel cases. The color refers to a saturated, slightly violet-shifted blue with the matte finish of velvet or melton wool dyed to maximum intensity: deeper than cornflower, warmer than ultramarine, with the heraldic weight of a color reserved for monarchs and the official Crown.

Catnip
modifier

Old English catte-nepe, cat-mint-or-catnip. As a color modifier, catnip implies a cat-mint-and-grey-green-cottage-herb quality, the visual register of English-cottage-and-Quaker-herb-garden-catnip hand-cat-mint-and-grey-green-cottage-herb English-cottage-and-Quaker-herb-garden-catnip-and-Tudor-still-room catnip-and-cat-mint surfaces under English-cottage-and-Quaker-herb-garden-catnip-and-Tudor-still-room Sussex-cottage-and-New-England-Quaker-garden cottage-herb-light. Sits at the modifier-and-flavor end of the grid, parallel to hyssop and lovage in usage.

Crimson
noun

From the Old Spanish cremesin, itself from the Arabic qirmiz — the kermes scale insect, dried and ground into a brilliant carmine dye prized in the medieval Mediterranean. For centuries the most expensive red on a draper's shelf, reserved for cardinals, kings, and the cloth that gave English the word crimson. Cooler than scarlet, deeper than rose; the color of pomegranate seeds and a serious occasion.

Closest matches

The nearest named color in three reference sources, ranked by perceptual distance (ΔE76 in CIELAB). ΔE < 1 is imperceptible to most viewers; ΔE > 10 is clearly different. When two sources point to the same hex they’re merged into one tile; click any to open that color’s page.

Variations

Click any swatch to explore

Harmonies

Accessibility

Color-vision simulation

How this color appears to viewers with the four major color-vision-deficiency types. Computed via the Machado (2009) physiologically-based model. If a tile matches the original, the color reads the same to that viewer.

#e4213f
Original
#635b3e
Protanopia
#928438
Deuteranopia
#fb0030
Tritanopia
#4d4d4d
Achromatopsia
WCAG contrast

The color used as foreground text against pure white and pure black, with the contrast ratio and WCAG 2.1 grade. Aim for AA (4.5:1) for body text and AA Large (3:1) for 18 pt+ headlines; AAA (7:1) is the gold standard for long-form reading surfaces.

The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AAon White
4.58:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AAon Black
4.59:1

Wide gamut

Display P3 representation

The CSS Color 4 wide-gamut form of this color. Both swatches render the same color on every display — the P3 form only diverges from sRGB when a designer pushes channels outside sRGB's reach.

sRGB hex
sRGB hex
##E4213F
Display P3
Display P3
color(display-p3 0.8214 0.2222 0.2708)
P3 has visible headroomOKLCH chroma 0.223

This color is chromatic enough that authoring it as P3 native (instead of clamping to sRGB) gives a perceptibly more saturated render on wide-gamut displays — modern Macs, iPhones, iPads, and most recent OLED laptops.

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