#312A37
Closest named color: Space Cadet (#2B2D42). oklch(29.8% 0.025 309.2), rgb(49, 42, 55).
Aa
White text reads best on this color (13.84:1).
About this color
#312A37 is a dark close to neutral grey. In OKLCH its lightness is 30%, its chroma 0.025. It has too little chroma to lean warm or cool. The nearest named color is Space Cadet (#2B2D42), ΔE 0.021 away. White text reads best on it, at 13.84:1.
| Hue family | Neutrals |
| Lightness | dark (30%) |
| Chroma | close to neutral grey (0.025) |
| Temperature | neutral |
| Nearest name | Space Cadet (#2B2D42) |
| Black text | 1.51:1 |
| White text | 13.84:1 |
Values
| HEX | #312A37 |
| RGB | rgb(49, 42, 55) |
| HSL | hsl(272, 13%, 19%) |
| OKLCH | oklch(29.8% 0.025 309.2) |
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 #312A37 | 13.84:1 | AAA | Lc -103.5 | Preferred for body text |
| Black text on #312A37 | 1.51:1 | Fails | Lc 0.0 | Not readable |
| #312A37 text on white | 13.84:1 | AAA | Lc 100.4 | Preferred for body text |
| #312A37 text on black | 1.51:1 | 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
#F6F5F7
oklch(97.1% 0.003 308.4)
-
Step 100
100
#EBE8EE
oklch(93.5% 0.009 308.4)
-
Step 200
200
#DCD6E2
oklch(88.4% 0.017 308.2)
-
Step 300
300
#C6BCCF
oklch(80.9% 0.028 309.2)
-
Step 400
400
#A999B7
oklch(70.7% 0.047 309.1)
-
Step 500
500
#9480A6
oklch(63.1% 0.06 308.5)
-
Step 600
600
#7F6991
oklch(55.7% 0.066 309.3)
-
Step 700
700
#6B577B
oklch(49.1% 0.061 309.5)
-
Step 800
800
#574764
oklch(42.6% 0.051 309.4)
-
Step 900
900
#483C52
oklch(37.8% 0.04 309.3)
-
Step 950
950 (this color)
#312A37
oklch(29.8% 0.025 309.2)
#312A37 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) | #282C38 | 0.016 |
| Deuteranopia (no green cones) | #292D37 | 0.016 |
| Tritanopia (no blue cones) | #302C2E | 0.020 |
| Achromatopsia (no color) | #2D2D2D | 0.025 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #312A37
#312A37
oklch(29.8% 0.025 309.2)
- #293023
#293023
oklch(29.8% 0.025 130.8)
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 #312A37, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Space Cadet #2B2D42 ΔE 0.021
- Gunmetal #293241 ΔE 0.029
- Jet #212529 ΔE 0.042
- Oxford Blue #1B263B ΔE 0.042
- Dark #1B2431 ΔE 0.046
- Onyx #343A40 ΔE 0.052
- Dark Blue Grey #1F3B4D ΔE 0.061
- Prussian Blue #1D3557 ΔE 0.063
Use #312A37 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.