#851801
Closest named color: Dark Red (#8B0000). oklch(40.1% 0.147 33), rgb(133, 24, 1).
Aa
White text reads best on this color (9.86:1).
About this color
#851801 is a dark, vivid red. In OKLCH its lightness is 40%, its chroma 0.147 and its hue 33°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Red (#8B0000), ΔE 0.020 away. White text reads best on it, at 9.86:1.
| Hue family | Reds |
| Lightness | dark (40%) |
| Chroma | vivid (0.147) |
| Temperature | warm |
| Nearest name | Dark Red (#8B0000) |
| Black text | 2.12:1 |
| White text | 9.86:1 |
Values
| HEX | #851801 |
| RGB | rgb(133, 24, 1) |
| HSL | hsl(10, 99%, 26%) |
| OKLCH | oklch(40.1% 0.147 33) |
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 #851801 | 9.86:1 | AAA | Lc -95.7 | Preferred for body text |
| Black text on #851801 | 2.12:1 | Fails | Lc 12.6 | Not readable |
| #851801 text on white | 9.86:1 | AAA | Lc 91.3 | Preferred for body text |
| #851801 text on black | 2.12:1 | Fails | Lc -11.0 | 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 900.
-
Step 50
50
#FFF2EF
oklch(97.1% 0.015 33.1)
-
Step 100
100
#FEE3DC
oklch(93.6% 0.031 34.9)
-
Step 200
200
#FFCBC0
oklch(88.5% 0.061 32.1)
-
Step 300
300
#FFA693
oklch(80.9% 0.11 32.7)
-
Step 400
400
#FA6F54
oklch(70.6% 0.176 32.7)
-
Step 500
500
#F33A11
oklch(63.1% 0.225 33)
-
Step 600
600
#D02A00
oklch(55.6% 0.205 33)
-
Step 700
700
#B02200
oklch(49.1% 0.181 33)
-
Step 800
800
#921A00
oklch(42.8% 0.158 32.9)
-
Step 900
900 (this color)
#851801
oklch(40.1% 0.147 33)
-
Step 950
950
#4A0D03
oklch(27% 0.093 33)
#851801 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) | #3C3400 | 0.156 |
| Deuteranopia (no green cones) | #564C00 | 0.140 |
| Tritanopia (no blue cones) | #930015 | 0.036 |
| Achromatopsia (no color) | #434343 | 0.148 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #851801
#851801
oklch(40.1% 0.147 33)
- #00515E
#00515E
oklch(40% 0.07 213.1)
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 #851801, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Red #8B0000 ΔE 0.020
- Brick Red #8F1402 ΔE 0.021
- Maroon #800000 ΔE 0.027
- Red Brown #8B2E16 ΔE 0.039
- Chestnut #742802 ΔE 0.040
- Blood Red #980002 ΔE 0.040
- Deep Red #9A0200 ΔE 0.044
- Blood #770001 ΔE 0.044
Use #851801 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.