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Decisive Glee Crimson

#aa2417
Notes

Decisive Glee Crimson (#AA2417) is a true red with a jewel character. It carries the deep, saturated richness of a gemstone. Authoritative and slightly formal, it works well for type and heavy UI elements. Its HSL profile (5°, 76%, 38%) 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 cyan. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#aa2417
RGB
rgb(170, 36, 23)
HSL
hsl(5, 76%, 38%)
HWB
hwb(5 9% 33%)
OKLCH
oklch(48.2% 0.172 30.0)
P3
color(display-p3 0.6128 0.1911 0.1331)
HSV
hsv(5, 86%, 67%)
LAB
lab(37.61% 52.63 41.47)
LCH
lch(37.61% 67.00 38.24)
CMYK
cmyk(0%, 79%, 86%, 33%)

Etymology

Decisive
adjective

From the Latin decidere, to cut off — used as a modifier for colors that read as firm and final. Decisive black, decisive red: the implication is that the color has settled on its position and won't drift. Sits in the bold-bucket corner alongside resolute, with a slightly sharper edge.

Glee
modifier

Old English glēo, music-or-merriment. As a color modifier, glee implies a singing-and-merry-and-bubbling quality, the visual register of Elizabethan-glee-club-and-madrigal-glee hand-singing-and-merry-and-bubbling Elizabethan-glee-club-and-madrigal-and-catch-singing gleeful-and-singing-and-merry-and-bubbling surfaces under Elizabethan-glee-club-and-madrigal-and-catch-singing parlor-and-tavern-and-court candlelit-music-light. Sits at the modifier-and-mood end of the grid, parallel to mirth and merry 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.

#aa2417
Original
#4f4613
Protanopia
#70630e
Deuteranopia
#bc0023
Tritanopia
#404040
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).
AAAon White
7.06:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
Failon Black
2.97:1

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
##AA2417
Display P3
Display P3
color(display-p3 0.6128 0.1911 0.1331)
P3 has subtle headroomOKLCH chroma 0.172

Moderately saturated colors gain a small bump in P3 — the difference is usually visible side-by-side on wide-gamut hardware but won't change the character of the color.

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