#911603
Closest named color: Brick Red (#8F1402). oklch(42.3% 0.159 31.5), rgb(145, 22, 3).
Aa
White text reads best on this color (9.05:1).
About this color
#911603 is a dark, vivid red. In OKLCH its lightness is 42%, its chroma 0.159 and its hue 32°. Its hue sits on the warm side of the wheel. The nearest named color is Brick Red (#8F1402), ΔE 0.005 away. White text reads best on it, at 9.05:1.
| Hue family | Reds |
| Lightness | dark (42%) |
| Chroma | vivid (0.159) |
| Temperature | warm |
| Nearest name | Brick Red (#8F1402) |
| Black text | 2.32:1 |
| White text | 9.05:1 |
Values
| HEX | #911603 |
| RGB | rgb(145, 22, 3) |
| HSL | hsl(8, 96%, 29%) |
| OKLCH | oklch(42.3% 0.159 31.5) |
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 #911603 | 9.05:1 | AAA | Lc -93.6 | Preferred for body text |
| Black text on #911603 | 2.32:1 | Fails | Lc 14.9 | Not readable |
| #911603 text on white | 9.05:1 | AAA | Lc 89.1 | Fine for body text |
| #911603 text on black | 2.32:1 | Fails | Lc -13.2 | 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
#FEF3F0
oklch(97.2% 0.013 35.7)
-
Step 100
100
#FBE4DF
oklch(93.6% 0.026 32.2)
-
Step 200
200
#F9CDC4
oklch(88.4% 0.052 31.6)
-
Step 300
300
#F7AA9B
oklch(80.8% 0.094 31.4)
-
Step 400
400
#EF7964
oklch(70.7% 0.15 31.5)
-
Step 500
500
#E54F38
oklch(63% 0.19 31.4)
-
Step 600
600
#D1270B
oklch(55.6% 0.207 31.5)
-
Step 700
700
#B31A00
oklch(49.1% 0.188 31.6)
-
Step 800
800 (this color)
#911603
oklch(42.3% 0.159 31.5)
-
Step 900
900
#761E10
oklch(37.8% 0.124 31.8)
-
Step 950
950
#45130B
oklch(26.9% 0.079 31.6)
#911603 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) | #403700 | 0.171 |
| Deuteranopia (no green cones) | #5E5200 | 0.152 |
| Tritanopia (no blue cones) | #A10014 | 0.036 |
| Achromatopsia (no color) | #494949 | 0.160 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #911603
#911603
oklch(42.3% 0.159 31.5)
- #005865
#005865
oklch(42.3% 0.074 211.9)
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 #911603, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brick Red #8F1402 ΔE 0.005
- Blood Red #980002 ΔE 0.018
- Deep Red #9A0200 ΔE 0.020
- Dark Red #8B0000 ΔE 0.024
- Brown Red #922B05 ΔE 0.030
- Carmine #9D0216 ΔE 0.030
- Red Brown #8B2E16 ΔE 0.032
- Auburn #9B2226 ΔE 0.037
Use #911603 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.