#312C40
Closest named color: Space Cadet (#2B2D42). oklch(30.7% 0.036 295.7), rgb(49, 44, 64).
Aa
White text reads best on this color (13.41:1).
About this color
#312C40 is a dark, muted purple. In OKLCH its lightness is 31%, its chroma 0.036 and its hue 296°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Space Cadet (#2B2D42), ΔE 0.011 away. White text reads best on it, at 13.41:1.
| Hue family | Purples |
| Lightness | dark (31%) |
| Chroma | muted (0.036) |
| Temperature | in between |
| Nearest name | Space Cadet (#2B2D42) |
| Black text | 1.56:1 |
| White text | 13.41:1 |
Values
| HEX | #312C40 |
| RGB | rgb(49, 44, 64) |
| HSL | hsl(255, 19%, 21%) |
| OKLCH | oklch(30.7% 0.036 295.7) |
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 #312C40 | 13.41:1 | AAA | Lc -103.0 | Preferred for body text |
| Black text on #312C40 | 1.56:1 | Fails | Lc 0.0 | Not readable |
| #312C40 text on white | 13.41:1 | AAA | Lc 99.8 | Preferred for body text |
| #312C40 text on black | 1.56:1 | 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
#F6F5F9
oklch(97.2% 0.005 297.7)
-
Step 100
100
#EAE8F1
oklch(93.5% 0.012 296.3)
-
Step 200
200
#DAD6E7
oklch(88.4% 0.023 296.7)
-
Step 300
300
#C2BCDA
oklch(81% 0.042 294.6)
-
Step 400
400
#A498C7
oklch(70.7% 0.069 296.3)
-
Step 500
500
#8E7FB9
oklch(63.2% 0.087 295.7)
-
Step 600
600
#7867A5
oklch(55.6% 0.096 295.7)
-
Step 700
700
#65568D
oklch(49.2% 0.088 295.5)
-
Step 800
800
#524673
oklch(42.6% 0.074 295.3)
-
Step 900
900
#443B5D
oklch(37.7% 0.058 295.7)
-
Step 950
950 (this color)
#312C40
oklch(30.7% 0.036 295.7)
#312C40 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) | #272F41 | 0.018 |
| Deuteranopia (no green cones) | #282F3F | 0.018 |
| Tritanopia (no blue cones) | #2E2F33 | 0.029 |
| Achromatopsia (no color) | #2F2F2F | 0.036 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #312C40
#312C40
oklch(30.7% 0.036 295.7)
- #2F321D
#2F321D
oklch(30.8% 0.035 115.1)
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 #312C40, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Space Cadet #2B2D42 ΔE 0.011
- Gunmetal #293241 ΔE 0.022
- Oxford Blue #1B263B ΔE 0.045
- Onyx #343A40 ΔE 0.047
- Prussian Blue #1D3557 ΔE 0.050
- Dark Blue Grey #1F3B4D ΔE 0.051
- Dark #1B2431 ΔE 0.054
- Jet #212529 ΔE 0.055
Use #312C40 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.