#831507
Closest named color: Dark Red (#8B0000). oklch(39.5% 0.146 30.9), rgb(131, 21, 7).
Aa
White text reads best on this color (10.11:1).
About this color
#831507 is a dark, vivid red. In OKLCH its lightness is 39%, its chroma 0.146 and its hue 31°. 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 10.11:1.
| Hue family | Reds |
| Lightness | dark (39%) |
| Chroma | vivid (0.146) |
| Temperature | warm |
| Nearest name | Dark Red (#8B0000) |
| Black text | 2.07:1 |
| White text | 10.11:1 |
Values
| HEX | #831507 |
| RGB | rgb(131, 21, 7) |
| HSL | hsl(7, 90%, 27%) |
| OKLCH | oklch(39.5% 0.146 30.9) |
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 #831507 | 10.11:1 | AAA | Lc -96.2 | Preferred for body text |
| Black text on #831507 | 2.07:1 | Fails | Lc 12.1 | Not readable |
| #831507 text on white | 10.11:1 | AAA | Lc 91.9 | Preferred for body text |
| #831507 text on black | 2.07:1 | 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
#FEE3DD
oklch(93.6% 0.031 32.6)
-
Step 200
200
#FFCBC1
oklch(88.5% 0.061 30.9)
-
Step 300
300
#FFA695
oklch(80.9% 0.109 31.4)
-
Step 400
400
#FA6F59
oklch(70.7% 0.175 31)
-
Step 500
500
#F33921
oklch(63.1% 0.224 31)
-
Step 600
600
#D51B00
oklch(55.6% 0.217 30.9)
-
Step 700
700
#B41500
oklch(49.1% 0.192 30.9)
-
Step 800
800
#951000
oklch(42.7% 0.167 31)
-
Step 900
900 (this color)
#831507
oklch(39.5% 0.146 30.9)
-
Step 950
950
#4A0D05
oklch(27.1% 0.093 31.5)
#831507 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) | #3A3203 | 0.157 |
| Deuteranopia (no green cones) | #544A00 | 0.141 |
| Tritanopia (no blue cones) | #910014 | 0.033 |
| Achromatopsia (no color) | #424242 | 0.147 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #831507
#831507
oklch(39.5% 0.146 30.9)
- #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 #831507, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Red #8B0000 ΔE 0.019
- Maroon #800000 ΔE 0.020
- Brick Red #8F1402 ΔE 0.026
- Blood #770001 ΔE 0.037
- Chestnut #742802 ΔE 0.040
- Wine Red #7B0323 ΔE 0.043
- Blood Red #980002 ΔE 0.044
- Red Brown #8B2E16 ΔE 0.045
Use #831507 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.