#231C3E
Closest named color: Oxford Blue (#1B263B). oklch(25.4% 0.063 290.7), rgb(35, 28, 62).
Aa
White text reads best on this color (16.06:1).
About this color
#231C3E is a dark, muted purple. In OKLCH its lightness is 25%, its chroma 0.063 and its hue 291°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.035 away. White text reads best on it, at 16.06:1.
| Hue family | Purples |
| Lightness | dark (25%) |
| Chroma | muted (0.063) |
| Temperature | in between |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.30:1 |
| White text | 16.06:1 |
Values
| HEX | #231C3E |
| RGB | rgb(35, 28, 62) |
| HSL | hsl(252, 38%, 18%) |
| OKLCH | oklch(25.4% 0.063 290.7) |
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 #231C3E | 16.06:1 | AAA | Lc -105.5 | Preferred for body text |
| Black text on #231C3E | 1.30:1 | Fails | Lc 0.0 | Not readable |
| #231C3E text on white | 16.06:1 | AAA | Lc 102.9 | Preferred for body text |
| #231C3E text on black | 1.30:1 | 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
#F5F4FC
oklch(97% 0.011 292)
-
Step 100
100
#E9E8F8
oklch(93.6% 0.021 288.9)
-
Step 200
200
#D8D5F3
oklch(88.5% 0.041 290.1)
-
Step 300
300
#C0B9EE
oklch(81% 0.074 290.7)
-
Step 400
400
#A193E5
oklch(70.8% 0.118 290.9)
-
Step 500
500
#8B76DD
oklch(63.1% 0.151 290.8)
-
Step 600
600
#765CCB
oklch(55.6% 0.165 290.8)
-
Step 700
700
#634BAF
oklch(49% 0.153 290.7)
-
Step 800
800
#513E8E
oklch(42.7% 0.127 291)
-
Step 900
900
#433671
oklch(37.8% 0.098 291.1)
-
Step 950
950 (this color)
#231C3E
oklch(25.4% 0.063 290.7)
#231C3E 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) | #0F223F | 0.034 |
| Deuteranopia (no green cones) | #10203D | 0.032 |
| Tritanopia (no blue cones) | #1C232A | 0.051 |
| Achromatopsia (no color) | #212121 | 0.063 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #231C3E
#231C3E
oklch(25.4% 0.063 290.7)
- #242500
#242500
oklch(25.5% 0.056 111.3)
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 #231C3E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.035
- Dark #1B2431 ΔE 0.042
- Rich Black #0D1B2A ΔE 0.055
- Jet #212529 ΔE 0.056
- Space Cadet #2B2D42 ΔE 0.057
- Dark Purple #35063E ΔE 0.060
- Dark Indigo #1F0954 ΔE 0.061
- Eggplant #380835 ΔE 0.063
Use #231C3E 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.