#31222B
Closest named color: Jet (#212529). oklch(27.4% 0.028 342.4), rgb(49, 34, 43).
Aa
White text reads best on this color (15.06:1).
About this color
#31222B is a dark close to neutral grey. In OKLCH its lightness is 27%, its chroma 0.028. It has too little chroma to lean warm or cool. The nearest named color is Jet (#212529), ΔE 0.032 away. White text reads best on it, at 15.06:1.
| Hue family | Neutrals |
| Lightness | dark (27%) |
| Chroma | close to neutral grey (0.028) |
| Temperature | neutral |
| Nearest name | Jet (#212529) |
| Black text | 1.39:1 |
| White text | 15.06:1 |
Values
| HEX | #31222B |
| RGB | rgb(49, 34, 43) |
| HSL | hsl(324, 18%, 16%) |
| OKLCH | oklch(27.4% 0.028 342.4) |
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 #31222B | 15.06:1 | AAA | Lc -104.7 | Preferred for body text |
| Black text on #31222B | 1.39:1 | Fails | Lc 0.0 | Not readable |
| #31222B text on white | 15.06:1 | AAA | Lc 101.9 | Preferred for body text |
| #31222B text on black | 1.39:1 | 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
#F8F4F6
oklch(97.1% 0.005 345.3)
-
Step 100
100
#EFE7EB
oklch(93.5% 0.01 345.4)
-
Step 200
200
#E2D5DC
oklch(88.5% 0.017 343.7)
-
Step 300
300
#D0B9C6
oklch(80.9% 0.031 342.8)
-
Step 400
400
#B894AA
oklch(70.6% 0.052 341.3)
-
Step 500
500
#A67A95
oklch(63.2% 0.066 341.8)
-
Step 600
600
#91627F
oklch(55.5% 0.073 342.2)
-
Step 700
700
#7B516B
oklch(49% 0.067 342.2)
-
Step 800
800
#644357
oklch(42.7% 0.054 342.6)
-
Step 900
900
#523848
oklch(37.6% 0.044 342)
-
Step 950
950 (this color)
#31222B
oklch(27.4% 0.028 342.4)
#31222B 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) | #23252B | 0.028 |
| Deuteranopia (no green cones) | #26272B | 0.026 |
| Tritanopia (no blue cones) | #332225 | 0.012 |
| Achromatopsia (no color) | #262626 | 0.028 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31222B
#31222B
oklch(27.4% 0.028 342.4)
- #1B2C23
#1B2C23
oklch(27.5% 0.028 160.7)
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 #31222B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Jet #212529 ΔE 0.032
- Dark #1B2431 ΔE 0.041
- Oxford Blue #1B263B ΔE 0.046
- Space Cadet #2B2D42 ΔE 0.047
- Gunmetal #293241 ΔE 0.056
- Dark Brown #341C02 ΔE 0.061
- Chocolate Brown #411900 ΔE 0.066
- Rich Black #0D1B2A ΔE 0.072
Use #31222B 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.