#231D3D
Closest named color: Oxford Blue (#1B263B). oklch(25.5% 0.059 290.2), rgb(35, 29, 61).
Aa
White text reads best on this color (15.97:1).
About this color
#231D3D is a dark, muted purple. In OKLCH its lightness is 26%, its chroma 0.059 and its hue 290°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.032 away. White text reads best on it, at 15.97:1.
| Hue family | Purples |
| Lightness | dark (26%) |
| Chroma | muted (0.059) |
| Temperature | in between |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.31:1 |
| White text | 15.97:1 |
Values
| HEX | #231D3D |
| RGB | rgb(35, 29, 61) |
| HSL | hsl(251, 36%, 18%) |
| OKLCH | oklch(25.5% 0.059 290.2) |
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 #231D3D | 15.97:1 | AAA | Lc -105.4 | Preferred for body text |
| Black text on #231D3D | 1.31:1 | Fails | Lc 0.0 | Not readable |
| #231D3D text on white | 15.97:1 | AAA | Lc 102.9 | Preferred for body text |
| #231D3D text on black | 1.31:1 | 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
#F5F4FB
oklch(97% 0.009 292.8)
-
Step 100
100
#E9E8F7
oklch(93.6% 0.02 289.1)
-
Step 200
200
#D8D5F2
oklch(88.4% 0.04 290.3)
-
Step 300
300
#BFBAEB
oklch(81% 0.069 289.4)
-
Step 400
400
#A094E1
oklch(70.7% 0.111 290.4)
-
Step 500
500
#8A78D9
oklch(63.2% 0.143 290.2)
-
Step 600
600
#755FC6
oklch(55.7% 0.154 290.3)
-
Step 700
700
#624DAB
oklch(49% 0.145 290.3)
-
Step 800
800
#50408B
oklch(42.7% 0.12 290.2)
-
Step 900
900
#42376F
oklch(37.7% 0.093 290.2)
-
Step 950
950 (this color)
#231D3D
oklch(25.5% 0.059 290.2)
#231D3D 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) | #12223E | 0.030 |
| Deuteranopia (no green cones) | #12213C | 0.029 |
| Tritanopia (no blue cones) | #1C232A | 0.048 |
| Achromatopsia (no color) | #222222 | 0.059 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #231D3D
#231D3D
oklch(25.5% 0.059 290.2)
- #252500
#252500
oklch(25.6% 0.056 109.8)
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 #231D3D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.032
- Dark #1B2431 ΔE 0.039
- Jet #212529 ΔE 0.053
- Rich Black #0D1B2A ΔE 0.054
- Space Cadet #2B2D42 ΔE 0.054
- Dark Purple #35063E ΔE 0.062
- Eggplant #380835 ΔE 0.064
- Dark Indigo #1F0954 ΔE 0.065
Use #231D3D 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.