#901905
Closest named color: Brick Red (#8F1402). oklch(42.3% 0.156 31.8), rgb(144, 25, 5).
Aa
White text reads best on this color (9.02:1).
About this color
#901905 is a dark, vivid red. In OKLCH its lightness is 42%, its chroma 0.156 and its hue 32°. Its hue sits on the warm side of the wheel. The nearest named color is Brick Red (#8F1402), ΔE 0.006 away. White text reads best on it, at 9.02:1.
| Hue family | Reds |
| Lightness | dark (42%) |
| Chroma | vivid (0.156) |
| Temperature | warm |
| Nearest name | Brick Red (#8F1402) |
| Black text | 2.32:1 |
| White text | 9.02:1 |
Values
| HEX | #901905 |
| RGB | rgb(144, 25, 5) |
| HSL | hsl(9, 93%, 29%) |
| OKLCH | oklch(42.3% 0.156 31.8) |
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 #901905 | 9.02:1 | AAA | Lc -93.7 | Preferred for body text |
| Black text on #901905 | 2.32:1 | Fails | Lc 14.9 | Not readable |
| #901905 text on white | 9.02:1 | AAA | Lc 89.1 | Fine for body text |
| #901905 text on black | 2.32:1 | Fails | Lc -13.1 | 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
#F9CEC5
oklch(88.6% 0.05 31.8)
-
Step 300
300
#F6AB9C
oklch(80.9% 0.092 31.7)
-
Step 400
400
#ED7A65
oklch(70.6% 0.146 31.7)
-
Step 500
500
#E45139
oklch(63.1% 0.187 31.8)
-
Step 600
600
#CF2B0F
oklch(55.5% 0.203 31.8)
-
Step 700
700
#B21C00
oklch(49.1% 0.187 31.9)
-
Step 800
800 (this color)
#901905
oklch(42.3% 0.156 31.8)
-
Step 900
900
#751F11
oklch(37.8% 0.122 31.9)
-
Step 950
950
#45140C
oklch(27% 0.077 31.7)
#901905 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) | #413800 | 0.167 |
| Deuteranopia (no green cones) | #5D5200 | 0.150 |
| Tritanopia (no blue cones) | #A00017 | 0.038 |
| Achromatopsia (no color) | #494949 | 0.157 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #901905
#901905
oklch(42.3% 0.156 31.8)
- #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 #901905, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brick Red #8F1402 ΔE 0.006
- Blood Red #980002 ΔE 0.021
- Deep Red #9A0200 ΔE 0.023
- Dark Red #8B0000 ΔE 0.026
- Brown Red #922B05 ΔE 0.028
- Red Brown #8B2E16 ΔE 0.029
- Carmine #9D0216 ΔE 0.032
- Auburn #9B2226 ΔE 0.037
Use #901905 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.