#231D42
Closest named color: Oxford Blue (#1B263B). oklch(25.9% 0.067 288.2), rgb(35, 29, 66).
Aa
White text reads best on this color (15.83:1).
About this color
#231D42 is a dark, muted purple. In OKLCH its lightness is 26%, its chroma 0.067 and its hue 288°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.036 away. White text reads best on it, at 15.83:1.
| Hue family | Purples |
| Lightness | dark (26%) |
| Chroma | muted (0.067) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.32:1 |
| White text | 15.83:1 |
Values
| HEX | #231D42 |
| RGB | rgb(35, 29, 66) |
| HSL | hsl(250, 39%, 19%) |
| OKLCH | oklch(25.9% 0.067 288.2) |
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 #231D42 | 15.83:1 | AAA | Lc -105.3 | Preferred for body text |
| Black text on #231D42 | 1.32:1 | Fails | Lc 0.0 | Not readable |
| #231D42 text on white | 15.83:1 | AAA | Lc 102.7 | Preferred for body text |
| #231D42 text on black | 1.32:1 | 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
#E9E8F9
oklch(93.7% 0.023 288.7)
-
Step 200
200
#D7D5F6
oklch(88.5% 0.045 288.2)
-
Step 300
300
#BEB9F2
oklch(80.9% 0.08 288.5)
-
Step 400
400
#9D93EB
oklch(70.7% 0.127 287.9)
-
Step 500
500
#8775E5
oklch(63.1% 0.163 288.2)
-
Step 600
600
#725BD3
oklch(55.6% 0.177 288.1)
-
Step 700
700
#604AB7
oklch(49.2% 0.165 288.1)
-
Step 800
800
#4E3D94
oklch(42.7% 0.137 288.2)
-
Step 900
900
#403576
oklch(37.6% 0.107 287.9)
-
Step 950
950 (this color)
#231D42
oklch(25.9% 0.067 288.2)
#231D42 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) | #0E2343 | 0.034 |
| Deuteranopia (no green cones) | #0E2141 | 0.033 |
| Tritanopia (no blue cones) | #1A252C | 0.057 |
| Achromatopsia (no color) | #222222 | 0.068 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #231D42
#231D42
oklch(25.9% 0.067 288.2)
- #262500
#262500
oklch(25.7% 0.056 108.2)
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 #231D42, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.036
- Dark #1B2431 ΔE 0.046
- Space Cadet #2B2D42 ΔE 0.055
- Dark Indigo #1F0954 ΔE 0.058
- Jet #212529 ΔE 0.060
- Rich Black #0D1B2A ΔE 0.061
- Dark Purple #35063E ΔE 0.062
- Eggplant #380835 ΔE 0.066
Use #231D42 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.