#31333D
Closest named color: Gunmetal (#293241). oklch(32.3% 0.018 276.4), rgb(49, 51, 61).
Aa
White text reads best on this color (12.56:1).
About this color
#31333D is a dark close to neutral grey. In OKLCH its lightness is 32%, its chroma 0.018. It has too little chroma to lean warm or cool. The nearest named color is Gunmetal (#293241), ΔE 0.016 away. White text reads best on it, at 12.56:1.
| Hue family | Neutrals |
| Lightness | dark (32%) |
| Chroma | close to neutral grey (0.018) |
| Temperature | neutral |
| Nearest name | Gunmetal (#293241) |
| Black text | 1.67:1 |
| White text | 12.56:1 |
Values
| HEX | #31333D |
| RGB | rgb(49, 51, 61) |
| HSL | hsl(230, 11%, 22%) |
| OKLCH | oklch(32.3% 0.018 276.4) |
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 #31333D | 12.56:1 | AAA | Lc -101.9 | Preferred for body text |
| Black text on #31333D | 1.67:1 | Fails | Lc 0.0 | Not readable |
| #31333D text on white | 12.56:1 | AAA | Lc 98.5 | Preferred for body text |
| #31333D text on black | 1.67:1 | 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
#F5F5F7
oklch(97.1% 0.003 286.4)
-
Step 100
100
#E8E9EE
oklch(93.5% 0.007 277.2)
-
Step 200
200
#D7D9E1
oklch(88.6% 0.011 274.9)
-
Step 300
300
#BDC0CF
oklch(81% 0.021 276.9)
-
Step 400
400
#9B9FB6
oklch(70.7% 0.034 277.7)
-
Step 500
500
#8288A4
oklch(63.2% 0.043 275.6)
-
Step 600
600
#6C718F
oklch(55.6% 0.047 277.4)
-
Step 700
700
#5A5F7A
oklch(49.2% 0.044 276.5)
-
Step 800
800
#494D63
oklch(42.5% 0.037 276.7)
-
Step 900
900
#3D4051
oklch(37.6% 0.029 277.1)
-
Step 950
950 (this color)
#31333D
oklch(32.3% 0.018 276.4)
#31333D 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) | #30343D | 0.004 |
| Deuteranopia (no green cones) | #30333D | 0.002 |
| Tritanopia (no blue cones) | #2E3536 | 0.017 |
| Achromatopsia (no color) | #333333 | 0.018 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31333D
#31333D
oklch(32.3% 0.018 276.4)
- #363429
#363429
oklch(32.3% 0.019 98.8)
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 #31333D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Gunmetal #293241 ΔE 0.016
- Onyx #343A40 ΔE 0.024
- Space Cadet #2B2D42 ΔE 0.027
- Dark Blue Grey #1F3B4D ΔE 0.038
- Midnight Green #073B4C ΔE 0.050
- Charcoal Grey #3C4142 ΔE 0.050
- Prussian Blue #1D3557 ΔE 0.051
- Oxford Blue #1B263B ΔE 0.060
Use #31333D 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.