#90040C
Closest named color: Dark Red (#8B0000). oklch(41.3% 0.166 27.3), rgb(144, 4, 12).
Aa
White text reads best on this color (9.50:1).
About this color
#90040C is a dark, vivid red. In OKLCH its lightness is 41%, its chroma 0.166 and its hue 27°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Red (#8B0000), ΔE 0.014 away. White text reads best on it, at 9.50:1.
| Hue family | Reds |
| Lightness | dark (41%) |
| Chroma | vivid (0.166) |
| Temperature | warm |
| Nearest name | Dark Red (#8B0000) |
| Black text | 2.20:1 |
| White text | 9.50:1 |
Values
| HEX | #90040C |
| RGB | rgb(144, 4, 12) |
| HSL | hsl(357, 95%, 29%) |
| OKLCH | oklch(41.3% 0.166 27.3) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #90040C | 9.50:1 | AAA | Lc -94.2 | Preferred for body text |
| Black text on #90040C | 2.20:1 | Fails | Lc 14.3 | Not readable |
| #90040C text on white | 9.50:1 | AAA | Lc 89.7 | Fine for body text |
| #90040C text on black | 2.20:1 | Fails | Lc -12.6 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 800.
-
Step 50
50
#FEF2F1
oklch(97% 0.013 23.2)
-
Step 100
100
#FCE3E0
oklch(93.5% 0.028 25.9)
-
Step 200
200
#FBCCC6
oklch(88.4% 0.054 26.7)
-
Step 300
300
#F9A99E
oklch(81% 0.097 28)
-
Step 400
400
#F2766A
oklch(70.8% 0.155 27.3)
-
Step 500
500
#E94940
oklch(63.1% 0.198 27.5)
-
Step 600
600
#D41A1E
oklch(55.5% 0.215 27.4)
-
Step 700
700
#B70010
oklch(49% 0.2 27.3)
-
Step 800
800 (this color)
#90040C
oklch(41.3% 0.166 27.3)
-
Step 900
900
#781916
oklch(37.8% 0.13 27.4)
-
Step 950
950
#46110E
oklch(26.9% 0.082 27.3)
#90040C with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #3A3309 | 0.183 |
| Deuteranopia (no green cones) | #5A4F01 | 0.163 |
| Tritanopia (no blue cones) | #A0000B | 0.035 |
| Achromatopsia (no color) | #464646 | 0.167 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #90040C
#90040C
oklch(41.3% 0.166 27.3)
- #00555F
#00555F
oklch(41.1% 0.071 208.5)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #90040C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Red #8B0000 ΔE 0.014
- Brick Red #8F1402 ΔE 0.014
- Blood Red #980002 ΔE 0.018
- Deep Red #9A0200 ΔE 0.023
- Carmine #9D0216 ΔE 0.029
- Maroon #800000 ΔE 0.038
- Auburn #9B2226 ΔE 0.043
- Brown Red #922B05 ΔE 0.046
Use #90040C in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.