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Decisive Orion Crimson

#b40e25
Notes

Decisive Orion Crimson (#B40E25) 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 (352°, 86%, 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 teal. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#b40e25
RGB
rgb(180, 14, 37)
HSL
hsl(352, 86%, 38%)
HWB
hwb(352 5% 29%)
OKLCH
oklch(49.0% 0.192 23.4)
HSV
hsv(352, 92%, 71%)
LAB
lab(38.12% 60.70 35.04)
LCH
lch(38.12% 70.08 29.99)
CMYK
cmyk(0%, 92%, 79%, 29%)

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.

Orion
modifier

Greek Ὠρίων, hunter-of-the-myth. As a color modifier, orion implies a winter-hunter-and-belt-and-shoulder quality, the visual register of winter-Orion-and-Belt-of-Orion hand-winter-hunter-and-belt-and-shoulder winter-Orion-and-Belt-of-Orion-and-Bortle-1-sky orion-and-winter-hunter-and-belt-and-shoulder surfaces under winter-Orion-and-Belt-of-Orion-and-Bortle-1-sky January-and-February-winter-zenith winter-constellation-light. Sits at the modifier-and-cosmic end of the grid, parallel to rigel and cygnus 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

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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.

#b40e25
Original
#4b4424
Protanopia
#72661e
Deuteranopia
#c7001b
Tritanopia
#333333
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
6.93:1
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
3.03:1

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