#331F1F
Closest named color: Jet (#212529). oklch(26.5% 0.031 19.4), rgb(51, 31, 31).
Aa
White text reads best on this color (15.48:1).
About this color
#331F1F is a dark, muted red. In OKLCH its lightness is 26%, its chroma 0.031 and its hue 19°. Its hue sits on the warm side of the wheel. The nearest named color is Jet (#212529), ΔE 0.038 away. White text reads best on it, at 15.48:1.
| Hue family | Reds |
| Lightness | dark (26%) |
| Chroma | muted (0.031) |
| Temperature | warm |
| Nearest name | Jet (#212529) |
| Black text | 1.35:1 |
| White text | 15.48:1 |
Values
| HEX | #331F1F |
| RGB | rgb(51, 31, 31) |
| HSL | hsl(0, 24%, 16%) |
| OKLCH | oklch(26.5% 0.031 19.4) |
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 #331F1F | 15.48:1 | AAA | Lc -105.0 | Preferred for body text |
| Black text on #331F1F | 1.35:1 | Fails | Lc 0.0 | Not readable |
| #331F1F text on white | 15.48:1 | AAA | Lc 102.3 | Preferred for body text |
| #331F1F text on black | 1.35:1 | Fails | Lc 0.0 | 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 950.
-
Step 50
50
#F9F4F4
oklch(97.1% 0.005 17.2)
-
Step 100
100
#F1E7E7
oklch(93.6% 0.011 17.4)
-
Step 200
200
#E7D4D4
oklch(88.5% 0.021 17.6)
-
Step 300
300
#D8B8B7
oklch(81% 0.037 20.1)
-
Step 400
400
#C39292
oklch(70.7% 0.059 18.7)
-
Step 500
500
#B37777
oklch(63.1% 0.076 19.4)
-
Step 600
600
#9E5F60
oklch(55.6% 0.082 19)
-
Step 700
700
#874E4F
oklch(49.1% 0.077 19.1)
-
Step 800
800
#6E4041
oklch(42.7% 0.064 18.7)
-
Step 900
900
#593737
oklch(37.7% 0.049 19.6)
-
Step 950
950 (this color)
#331F1F
oklch(26.5% 0.031 19.4)
#331F1F 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) | #23221F | 0.033 |
| Deuteranopia (no green cones) | #28261F | 0.031 |
| Tritanopia (no blue cones) | #371D1F | 0.010 |
| Achromatopsia (no color) | #242424 | 0.032 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #331F1F
#331F1F
oklch(26.5% 0.031 19.4)
- #102A2B
#102A2B
oklch(26.5% 0.032 198.7)
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 #331F1F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Jet #212529 ΔE 0.038
- Dark Brown #341C02 ΔE 0.041
- Chocolate Brown #411900 ΔE 0.048
- Dark #1B2431 ΔE 0.052
- Oxford Blue #1B263B ΔE 0.063
- Space Cadet #2B2D42 ΔE 0.066
- Deep Brown #410200 ΔE 0.069
- Dark Maroon #3C0008 ΔE 0.071
Use #331F1F 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.