#312557
Closest named color: Space Cadet (#2B2D42). oklch(30.7% 0.087 291.5), rgb(49, 37, 87).
Aa
White text reads best on this color (13.70:1).
About this color
#312557 is a dark, moderately saturated purple. In OKLCH its lightness is 31%, its chroma 0.087 and its hue 291°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Space Cadet (#2B2D42), ΔE 0.050 away. White text reads best on it, at 13.70:1.
| Hue family | Purples |
| Lightness | dark (31%) |
| Chroma | moderately saturated (0.087) |
| Temperature | in between |
| Nearest name | Space Cadet (#2B2D42) |
| Black text | 1.53:1 |
| White text | 13.70:1 |
Values
| HEX | #312557 |
| RGB | rgb(49, 37, 87) |
| HSL | hsl(254, 40%, 24%) |
| OKLCH | oklch(30.7% 0.087 291.5) |
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 #312557 | 13.70:1 | AAA | Lc -103.2 | Preferred for body text |
| Black text on #312557 | 1.53:1 | Fails | Lc 0.0 | Not readable |
| #312557 text on white | 13.70:1 | AAA | Lc 100.1 | Preferred for body text |
| #312557 text on black | 1.53:1 | 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
#F5F4FE
oklch(97.1% 0.013 290.8)
-
Step 100
100
#EAE7FD
oklch(93.7% 0.03 292.1)
-
Step 200
200
#D9D3FD
oklch(88.5% 0.058 291.7)
-
Step 300
300
#C1B5FE
oklch(80.9% 0.102 291.5)
-
Step 400
400
#A38BFE
oklch(70.8% 0.164 291.2)
-
Step 500
500
#8F68FC
oklch(63.1% 0.211 291.3)
-
Step 600
600
#7B49EB
oklch(55.6% 0.229 291.3)
-
Step 700
700
#6838CC
oklch(49% 0.213 291.3)
-
Step 800
800
#5530A5
oklch(42.7% 0.176 291.6)
-
Step 900
900
#452D83
oklch(37.7% 0.137 291.2)
-
Step 950
950 (this color)
#312557
oklch(30.7% 0.087 291.5)
#312557 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) | #0F2E59 | 0.051 |
| Deuteranopia (no green cones) | #112C56 | 0.048 |
| Tritanopia (no blue cones) | #272F3A | 0.069 |
| Achromatopsia (no color) | #2D2D2D | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #312557
#312557
oklch(30.7% 0.087 291.5)
- #313200
#313200
oklch(30.6% 0.067 111)
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 #312557, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Space Cadet #2B2D42 ΔE 0.050
- Prussian Blue #1D3557 ΔE 0.053
- Marine #042E60 ΔE 0.058
- Gunmetal #293241 ΔE 0.064
- Oxford Blue #1B263B ΔE 0.065
- Midnight Blue #191970 ΔE 0.070
- Marine Blue #01386A ΔE 0.072
- Dark Blue Grey #1F3B4D ΔE 0.077
Use #312557 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.