#901D17
Closest named color: Brick Red (#8F1402). oklch(42.8% 0.151 28.5), rgb(144, 29, 23).
Aa
White text reads best on this color (8.84:1).
About this color
#901D17 is a dark, vivid red. In OKLCH its lightness is 43%, its chroma 0.151 and its hue 29°. Its hue sits on the warm side of the wheel. The nearest named color is Brick Red (#8F1402), ΔE 0.015 away. White text reads best on it, at 8.84:1.
| Hue family | Reds |
| Lightness | dark (43%) |
| Chroma | vivid (0.151) |
| Temperature | warm |
| Nearest name | Brick Red (#8F1402) |
| Black text | 2.37:1 |
| White text | 8.84:1 |
Values
| HEX | #901D17 |
| RGB | rgb(144, 29, 23) |
| HSL | hsl(3, 72%, 33%) |
| OKLCH | oklch(42.8% 0.151 28.5) |
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 #901D17 | 8.84:1 | AAA | Lc -93.4 | Preferred for body text |
| Black text on #901D17 | 2.37:1 | Fails | Lc 15.2 | Dividers and decoration only |
| #901D17 text on white | 8.84:1 | AAA | Lc 88.8 | Fine for body text |
| #901D17 text on black | 2.37:1 | Fails | Lc -13.4 | 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
#FDF3F1
oklch(97.1% 0.011 31.1)
-
Step 100
100
#FBE4E0
oklch(93.6% 0.026 29.4)
-
Step 200
200
#F8CEC7
oklch(88.6% 0.049 29.1)
-
Step 300
300
#F5ABA0
oklch(80.9% 0.089 28.6)
-
Step 400
400
#EC7B6D
oklch(70.8% 0.142 28.5)
-
Step 500
500
#E25245
oklch(63.1% 0.182 28.5)
-
Step 600
600
#CD2E26
oklch(55.6% 0.196 28.4)
-
Step 700
700
#B11D18
oklch(49.1% 0.183 28.5)
-
Step 800
800 (this color)
#901D17
oklch(42.8% 0.151 28.5)
-
Step 900
900
#742019
oklch(37.8% 0.119 28.7)
-
Step 950
950
#441410
oklch(26.9% 0.075 27.9)
#901D17 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) | #413A15 | 0.164 |
| Deuteranopia (no green cones) | #5E5311 | 0.147 |
| Tritanopia (no blue cones) | #9F001D | 0.035 |
| Achromatopsia (no color) | #4A4A4A | 0.153 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #901D17
#901D17
oklch(42.8% 0.151 28.5)
- #005A64
#005A64
oklch(42.8% 0.073 207.9)
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 #901D17, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brick Red #8F1402 ΔE 0.015
- Blood Red #980002 ΔE 0.024
- Deep Red #9A0200 ΔE 0.025
- Red Brown #8B2E16 ΔE 0.027
- Brown Red #922B05 ΔE 0.029
- Auburn #9B2226 ΔE 0.029
- Carmine #9D0216 ΔE 0.030
- Dark Red #8B0000 ΔE 0.031
Use #901D17 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.