#851811
Closest named color: Dark Red (#8B0000). oklch(40.2% 0.145 29.1), rgb(133, 24, 17).
Aa
White text reads best on this color (9.83:1).
About this color
#851811 is a dark, vivid red. In OKLCH its lightness is 40%, its chroma 0.145 and its hue 29°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Red (#8B0000), ΔE 0.019 away. White text reads best on it, at 9.83:1.
| Hue family | Reds |
| Lightness | dark (40%) |
| Chroma | vivid (0.145) |
| Temperature | warm |
| Nearest name | Dark Red (#8B0000) |
| Black text | 2.13:1 |
| White text | 9.83:1 |
Values
| HEX | #851811 |
| RGB | rgb(133, 24, 17) |
| HSL | hsl(4, 77%, 29%) |
| OKLCH | oklch(40.2% 0.145 29.1) |
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 #851811 | 9.83:1 | AAA | Lc -95.6 | Preferred for body text |
| Black text on #851811 | 2.13:1 | Fails | Lc 12.7 | Not readable |
| #851811 text on white | 9.83:1 | AAA | Lc 91.3 | Preferred for body text |
| #851811 text on black | 2.13:1 | 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
#FFF2F0
oklch(97.1% 0.014 28)
-
Step 100
100
#FEE3DE
oklch(93.6% 0.031 30.2)
-
Step 200
200
#FFCBC2
oklch(88.5% 0.061 29.7)
-
Step 300
300
#FFA698
oklch(81% 0.108 29.4)
-
Step 400
400
#FA6F5E
oklch(70.7% 0.174 29.2)
-
Step 500
500
#F2392C
oklch(63% 0.222 29.1)
-
Step 600
600
#D90002
oklch(55.6% 0.228 29.1)
-
Step 700
700
#B80001
oklch(49.1% 0.202 29.1)
-
Step 800
800
#980001
oklch(42.7% 0.175 29.1)
-
Step 900
900 (this color)
#851811
oklch(40.2% 0.145 29.1)
-
Step 950
950
#4A0D08
oklch(27.1% 0.092 29.3)
#851811 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) | #3B340E | 0.157 |
| Deuteranopia (no green cones) | #564C0A | 0.142 |
| Tritanopia (no blue cones) | #930018 | 0.033 |
| Achromatopsia (no color) | #434343 | 0.146 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #851811
#851811
oklch(40.2% 0.145 29.1)
- #00525C
#00525C
oklch(40.1% 0.069 208.9)
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 #851811, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Red #8B0000 ΔE 0.019
- Brick Red #8F1402 ΔE 0.022
- Maroon #800000 ΔE 0.027
- Blood Red #980002 ΔE 0.039
- Red Brown #8B2E16 ΔE 0.040
- Deep Red #9A0200 ΔE 0.043
- Chestnut #742802 ΔE 0.044
- Wine Red #7B0323 ΔE 0.044
Use #851811 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.