#312D3D
Closest named color: Space Cadet (#2B2D42). oklch(30.8% 0.029 296.1), rgb(49, 45, 61).
Aa
White text reads best on this color (13.34:1).
About this color
#312D3D is a dark close to neutral grey. In OKLCH its lightness is 31%, its chroma 0.029. It has too little chroma to lean warm or cool. The nearest named color is Space Cadet (#2B2D42), ΔE 0.014 away. White text reads best on it, at 13.34:1.
| Hue family | Neutrals |
| Lightness | dark (31%) |
| Chroma | close to neutral grey (0.029) |
| Temperature | neutral |
| Nearest name | Space Cadet (#2B2D42) |
| Black text | 1.57:1 |
| White text | 13.34:1 |
Values
| HEX | #312D3D |
| RGB | rgb(49, 45, 61) |
| HSL | hsl(255, 15%, 21%) |
| OKLCH | oklch(30.8% 0.029 296.1) |
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 #312D3D | 13.34:1 | AAA | Lc -102.9 | Preferred for body text |
| Black text on #312D3D | 1.57:1 | Fails | Lc 0.0 | Not readable |
| #312D3D text on white | 13.34:1 | AAA | Lc 99.8 | Preferred for body text |
| #312D3D text on black | 1.57:1 | 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
#EAE9F0
oklch(93.7% 0.009 292.8)
-
Step 200
200
#DAD7E5
oklch(88.6% 0.019 295.8)
-
Step 300
300
#C2BDD5
oklch(81% 0.034 295.2)
-
Step 400
400
#A39ABF
oklch(70.7% 0.054 296.1)
-
Step 500
500
#8D81AF
oklch(63.1% 0.069 296.3)
-
Step 600
600
#776A9B
oklch(55.6% 0.076 296)
-
Step 700
700
#645884
oklch(49% 0.07 296.2)
-
Step 800
800
#52486C
oklch(42.7% 0.06 296.5)
-
Step 900
900
#443D57
oklch(37.8% 0.045 296.6)
-
Step 950
950 (this color)
#312D3D
oklch(30.8% 0.029 296.1)
#312D3D 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) | #2A2F3E | 0.013 |
| Deuteranopia (no green cones) | #2A2F3D | 0.013 |
| Tritanopia (no blue cones) | #2F2F32 | 0.024 |
| Achromatopsia (no color) | #2F2F2F | 0.029 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #312D3D
#312D3D
oklch(30.8% 0.029 296.1)
- #2F3221
#2F3221
oklch(30.9% 0.029 116.3)
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 #312D3D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Space Cadet #2B2D42 ΔE 0.014
- Gunmetal #293241 ΔE 0.019
- Onyx #343A40 ΔE 0.043
- Oxford Blue #1B263B ΔE 0.046
- Dark Blue Grey #1F3B4D ΔE 0.050
- Jet #212529 ΔE 0.052
- Prussian Blue #1D3557 ΔE 0.053
- Dark #1B2431 ΔE 0.054
Use #312D3D 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.