#871021
Closest named color: Dark Red (#8B0000). oklch(40.2% 0.151 21.3), rgb(135, 16, 33).
Aa
White text reads best on this color (9.87:1).
About this color
#871021 is a dark, vivid red. In OKLCH its lightness is 40%, its chroma 0.151 and its hue 21°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Red (#8B0000), ΔE 0.026 away. White text reads best on it, at 9.87:1.
| Hue family | Reds |
| Lightness | dark (40%) |
| Chroma | vivid (0.151) |
| Temperature | warm |
| Nearest name | Dark Red (#8B0000) |
| Black text | 2.12:1 |
| White text | 9.87:1 |
Values
| HEX | #871021 |
| RGB | rgb(135, 16, 33) |
| HSL | hsl(351, 79%, 30%) |
| OKLCH | oklch(40.2% 0.151 21.3) |
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 #871021 | 9.87:1 | AAA | Lc -95.5 | Preferred for body text |
| Black text on #871021 | 2.12:1 | Fails | Lc 12.8 | Not readable |
| #871021 text on white | 9.87:1 | AAA | Lc 91.2 | Preferred for body text |
| #871021 text on black | 2.12:1 | Fails | Lc -11.2 | 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
#FDF3F2
oklch(97.2% 0.011 24.3)
-
Step 100
100
#FBE4E2
oklch(93.7% 0.025 23.6)
-
Step 200
200
#F8CDCB
oklch(88.5% 0.049 21.2)
-
Step 300
300
#F4AAA8
oklch(80.8% 0.088 20.9)
-
Step 400
400
#EB7979
oklch(70.6% 0.141 21.3)
-
Step 500
500
#E15157
oklch(63.1% 0.179 21.5)
-
Step 600
600
#CD2C3D
oklch(55.7% 0.195 21.3)
-
Step 700
700
#B11B2F
oklch(49.2% 0.182 21.4)
-
Step 800
800 (this color)
#871021
oklch(40.2% 0.151 21.3)
-
Step 900
900
#731F25
oklch(37.7% 0.117 20.9)
-
Step 950
950
#441416
oklch(27% 0.074 21.1)
#871021 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) | #383320 | 0.166 |
| Deuteranopia (no green cones) | #554C1D | 0.151 |
| Tritanopia (no blue cones) | #950018 | 0.030 |
| Achromatopsia (no color) | #434343 | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #871021
#871021
oklch(40.2% 0.151 21.3)
- #005357
#005357
oklch(40.2% 0.068 200.4)
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 #871021, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Red #8B0000 ΔE 0.026
- Red Wine #8C0034 ΔE 0.032
- Brick Red #8F1402 ΔE 0.033
- Wine Red #7B0323 ΔE 0.033
- Maroon #800000 ΔE 0.033
- Bordeaux #7B002C ΔE 0.040
- Blood Red #980002 ΔE 0.041
- Deep Red #9A0200 ΔE 0.045
Use #871021 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.