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Established Dock Crimson

#dd1f42
Notes

Established Dock Crimson (#DD1F42) 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 (349°, 75%, 49%) places it in the balanced band at a mid lightness. It works across type, buttons, and borders, saturated enough to feel deliberate but balanced enough to not fight the rest of the palette. 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
#dd1f42
RGB
rgb(221, 31, 66)
HSL
hsl(349, 75%, 49%)
HWB
hwb(349 12% 13%)
OKLCH
oklch(57.9% 0.218 19.3)
P3
color(display-p3 0.7960 0.2128 0.2783)
HSV
hsv(349, 86%, 87%)
LAB
lab(47.94% 69.64 31.14)
LCH
lch(47.94% 76.29 24.09)
CMYK
cmyk(0%, 86%, 70%, 13%)

Etymology

Established
adjective

Latin stabilīre, to make stable — past-participle of establish. As a color modifier, established implies a saturated-and-rooted quality where the hue carries the weight of long-standing visual presence. Sits at the bold-and-firm end of the grid, parallel to steadfast and anchored in usage.

Dock
modifier

Old Dutch docke, channel / inlet. As a color modifier, dock implies a working-port-and-cargo quality, the visual register of Liverpool-and-London Victorian-period industrial dock-and-warehouse iron-bonded shipping-trade surfaces under industrial-shipping Victorian-period overcast harbor sky. Sits at the modifier-and-place end of the grid, parallel to wharf and port 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.

#dd1f42
Original
#5f5942
Protanopia
#8d803c
Deuteranopia
#f30030
Tritanopia
#4a4a4a
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
4.83:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AA Largeon Black
4.35:1

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
##DD1F42
Display P3
Display P3
color(display-p3 0.7960 0.2128 0.2783)
P3 has visible headroomOKLCH chroma 0.218

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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