#901D01
Closest named color: Brick Red (#8F1402). oklch(42.6% 0.154 33.6), rgb(144, 29, 1).
Aa
White text reads best on this color (8.89:1).
About this color
#901D01 is a dark, vivid red. In OKLCH its lightness is 43%, its chroma 0.154 and its hue 34°. Its hue sits on the warm side of the wheel. The nearest named color is Brick Red (#8F1402), ΔE 0.011 away. White text reads best on it, at 8.89:1.
| Hue family | Reds |
| Lightness | dark (43%) |
| Chroma | vivid (0.154) |
| Temperature | warm |
| Nearest name | Brick Red (#8F1402) |
| Black text | 2.36:1 |
| White text | 8.89:1 |
Values
| HEX | #901D01 |
| RGB | rgb(144, 29, 1) |
| HSL | hsl(12, 99%, 28%) |
| OKLCH | oklch(42.6% 0.154 33.6) |
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 #901D01 | 8.89:1 | AAA | Lc -93.4 | Preferred for body text |
| Black text on #901D01 | 2.36:1 | Fails | Lc 15.1 | Dividers and decoration only |
| #901D01 text on white | 8.89:1 | AAA | Lc 88.8 | Fine for body text |
| #901D01 text on black | 2.36:1 | 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
#FDF3F0
oklch(97.1% 0.012 37.4)
-
Step 100
100
#FBE4DF
oklch(93.6% 0.026 32.2)
-
Step 200
200
#F8CEC4
oklch(88.5% 0.05 33.6)
-
Step 300
300
#F5AC9B
oklch(81% 0.09 33.6)
-
Step 400
400
#EC7C63
oklch(70.8% 0.144 33.8)
-
Step 500
500
#E25335
oklch(63% 0.184 33.6)
-
Step 600
600
#CE2F04
oklch(55.6% 0.2 33.6)
-
Step 700
700
#AF2500
oklch(49.1% 0.178 33.7)
-
Step 800
800 (this color)
#901D01
oklch(42.6% 0.154 33.6)
-
Step 900
900
#74200F
oklch(37.7% 0.121 33.2)
-
Step 950
950
#44150B
oklch(27% 0.075 33.7)
#901D01 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) | #433A00 | 0.162 |
| Deuteranopia (no green cones) | #5E5300 | 0.146 |
| Tritanopia (no blue cones) | #A00019 | 0.042 |
| Achromatopsia (no color) | #4A4A4A | 0.155 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #901D01
#901D01
oklch(42.6% 0.154 33.6)
- #005967
#005967
oklch(42.6% 0.075 213)
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 #901D01, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brick Red #8F1402 ΔE 0.011
- Brown Red #922B05 ΔE 0.022
- Blood Red #980002 ΔE 0.025
- Red Brown #8B2E16 ΔE 0.025
- Deep Red #9A0200 ΔE 0.026
- Dark Red #8B0000 ΔE 0.031
- Rust Brown #8B3103 ΔE 0.032
- Burnt Red #9F2305 ΔE 0.035
Use #901D01 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.