#312937
Closest named color: Space Cadet (#2B2D42). oklch(29.6% 0.027 310.5), rgb(49, 41, 55).
Aa
White text reads best on this color (13.97:1).
About this color
#312937 is a dark close to neutral grey. In OKLCH its lightness is 30%, its chroma 0.027. It has too little chroma to lean warm or cool. The nearest named color is Space Cadet (#2B2D42), ΔE 0.022 away. White text reads best on it, at 13.97:1.
| Hue family | Neutrals |
| Lightness | dark (30%) |
| Chroma | close to neutral grey (0.027) |
| Temperature | neutral |
| Nearest name | Space Cadet (#2B2D42) |
| Black text | 1.50:1 |
| White text | 13.97:1 |
Values
| HEX | #312937 |
| RGB | rgb(49, 41, 55) |
| HSL | hsl(274, 15%, 19%) |
| OKLCH | oklch(29.6% 0.027 310.5) |
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 #312937 | 13.97:1 | AAA | Lc -103.6 | Preferred for body text |
| Black text on #312937 | 1.50:1 | Fails | Lc 0.0 | Not readable |
| #312937 text on white | 13.97:1 | AAA | Lc 100.6 | Preferred for body text |
| #312937 text on black | 1.50:1 | 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
#F6F5F8
oklch(97.2% 0.004 301.4)
-
Step 100
100
#ECE8EF
oklch(93.6% 0.01 311.2)
-
Step 200
200
#DDD6E2
oklch(88.5% 0.018 311.6)
-
Step 300
300
#C7BBD0
oklch(80.8% 0.032 310.9)
-
Step 400
400
#AB98B9
oklch(70.7% 0.052 310.8)
-
Step 500
500
#967EA8
oklch(63% 0.067 310.4)
-
Step 600
600
#816793
oklch(55.6% 0.073 311)
-
Step 700
700
#6D567D
oklch(49.2% 0.067 310.9)
-
Step 800
800
#584666
oklch(42.6% 0.056 309.7)
-
Step 900
900
#493B53
oklch(37.7% 0.044 310.8)
-
Step 950
950 (this color)
#312937
oklch(29.6% 0.027 310.5)
#312937 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) | #272C38 | 0.019 |
| Deuteranopia (no green cones) | #282C37 | 0.018 |
| Tritanopia (no blue cones) | #302B2E | 0.020 |
| Achromatopsia (no color) | #2C2C2C | 0.027 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #312937
#312937
oklch(29.6% 0.027 310.5)
- #283021
#283021
oklch(29.7% 0.028 130.8)
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 #312937, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Space Cadet #2B2D42 ΔE 0.022
- Gunmetal #293241 ΔE 0.031
- Oxford Blue #1B263B ΔE 0.041
- Jet #212529 ΔE 0.041
- Dark #1B2431 ΔE 0.045
- Onyx #343A40 ΔE 0.055
- Dark Blue Grey #1F3B4D ΔE 0.063
- Prussian Blue #1D3557 ΔE 0.064
Use #312937 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.