#331F21
Closest named color: Jet (#212529). oklch(26.6% 0.031 12.8), rgb(51, 31, 33).
Aa
White text reads best on this color (15.45:1).
About this color
#331F21 is a dark, muted red. In OKLCH its lightness is 27%, its chroma 0.031 and its hue 13°. 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 15.45:1.
| Hue family | Reds |
| Lightness | dark (27%) |
| Chroma | muted (0.031) |
| Temperature | warm |
| Nearest name | Jet (#212529) |
| Black text | 1.35:1 |
| White text | 15.45:1 |
Values
| HEX | #331F21 |
| RGB | rgb(51, 31, 33) |
| HSL | hsl(354, 24%, 16%) |
| OKLCH | oklch(26.6% 0.031 12.8) |
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 #331F21 | 15.45:1 | AAA | Lc -105.0 | Preferred for body text |
| Black text on #331F21 | 1.35:1 | Fails | Lc 0.0 | Not readable |
| #331F21 text on white | 15.45:1 | AAA | Lc 102.3 | Preferred for body text |
| #331F21 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
#F1E7E8
oklch(93.6% 0.011 10.3)
-
Step 200
200
#E6D4D5
oklch(88.5% 0.02 13.7)
-
Step 300
300
#D8B7BA
oklch(80.9% 0.038 11.8)
-
Step 400
400
#C39296
oklch(70.8% 0.06 13.2)
-
Step 500
500
#B2767C
oklch(63% 0.076 12.9)
-
Step 600
600
#9D5E66
oklch(55.5% 0.083 11.9)
-
Step 700
700
#864E54
oklch(49.1% 0.076 13.3)
-
Step 800
800
#6D4045
oklch(42.7% 0.063 12.9)
-
Step 900
900
#59363A
oklch(37.6% 0.051 12.3)
-
Step 950
950 (this color)
#331F21
oklch(26.6% 0.031 12.8)
#331F21 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) | #222221 | 0.035 |
| Deuteranopia (no green cones) | #272621 | 0.032 |
| Tritanopia (no blue cones) | #371D20 | 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°).
- #331F21
#331F21
oklch(26.6% 0.031 12.8)
- #112A29
#112A29
oklch(26.5% 0.031 192)
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 #331F21, 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 0.044
- Chocolate Brown #411900 ΔE 0.051
- Dark #1B2431 ΔE 0.051
- Oxford Blue #1B263B ΔE 0.061
- Space Cadet #2B2D42 ΔE 0.064
- Deep Brown #410200 ΔE 0.071
- Gunmetal #293241 ΔE 0.071
Use #331F21 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.