#82180D
Closest named color: Dark Red (#8B0000). oklch(39.5% 0.142 30.3), rgb(130, 24, 13).
Aa
White text reads best on this color (10.06:1).
About this color
#82180D is a dark, vivid red. In OKLCH its lightness is 40%, its chroma 0.142 and its hue 30°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Red (#8B0000), ΔE 0.022 away. White text reads best on it, at 10.06:1.
| Hue family | Reds |
| Lightness | dark (40%) |
| Chroma | vivid (0.142) |
| Temperature | warm |
| Nearest name | Dark Red (#8B0000) |
| Black text | 2.08:1 |
| White text | 10.06:1 |
Values
| HEX | #82180D |
| RGB | rgb(130, 24, 13) |
| HSL | hsl(6, 82%, 28%) |
| OKLCH | oklch(39.5% 0.142 30.3) |
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 #82180D | 10.06:1 | AAA | Lc -96.2 | Preferred for body text |
| Black text on #82180D | 2.08:1 | Fails | Lc 12.1 | Not readable |
| #82180D text on white | 10.06:1 | AAA | Lc 91.9 | Preferred for body text |
| #82180D text on black | 2.08:1 | Fails | Lc -10.5 | 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
#FECBC2
oklch(88.4% 0.06 29.9)
-
Step 300
300
#FEA697
oklch(80.8% 0.107 30.1)
-
Step 400
400
#F9705D
oklch(70.7% 0.172 30)
-
Step 500
500
#F13D2A
oklch(63.1% 0.219 30.2)
-
Step 600
600
#D61400
oklch(55.5% 0.221 30.3)
-
Step 700
700
#B50F00
oklch(49% 0.195 30.3)
-
Step 800
800
#960A00
oklch(42.6% 0.17 30.2)
-
Step 900
900 (this color)
#82180D
oklch(39.5% 0.142 30.3)
-
Step 950
950
#490E07
oklch(27% 0.09 30.6)
#82180D 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) | #3A330A | 0.153 |
| Deuteranopia (no green cones) | #544A05 | 0.138 |
| Tritanopia (no blue cones) | #900017 | 0.034 |
| Achromatopsia (no color) | #424242 | 0.143 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #82180D
#82180D
oklch(39.5% 0.142 30.3)
- #00505B
#00505B
oklch(39.5% 0.069 210.6)
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 #82180D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Red #8B0000 ΔE 0.022
- Maroon #800000 ΔE 0.023
- Brick Red #8F1402 ΔE 0.028
- Chestnut #742802 ΔE 0.038
- Blood #770001 ΔE 0.038
- Wine Red #7B0323 ΔE 0.042
- Red Brown #8B2E16 ΔE 0.044
- Blood Red #980002 ΔE 0.045
Use #82180D 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.