#231E39
Closest named color: Oxford Blue (#1B263B). oklch(25.5% 0.05 290.9), rgb(35, 30, 57).
Aa
White text reads best on this color (15.95:1).
About this color
#231E39 is a dark, muted purple. In OKLCH its lightness is 25%, its chroma 0.050 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 0.028 away. White text reads best on it, at 15.95:1.
| Hue family | Purples |
| Lightness | dark (25%) |
| Chroma | muted (0.050) |
| Temperature | in between |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.31:1 |
| White text | 15.95:1 |
Values
| HEX | #231E39 |
| RGB | rgb(35, 30, 57) |
| HSL | hsl(251, 31%, 17%) |
| OKLCH | oklch(25.5% 0.05 290.9) |
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 #231E39 | 15.95:1 | AAA | Lc -105.4 | Preferred for body text |
| Black text on #231E39 | 1.31:1 | Fails | Lc 0.0 | Not readable |
| #231E39 text on white | 15.95:1 | AAA | Lc 102.9 | Preferred for body text |
| #231E39 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
#F5F5FB
oklch(97.2% 0.008 286.3)
-
Step 100
100
#E9E8F5
oklch(93.6% 0.017 289.6)
-
Step 200
200
#D9D6EE
oklch(88.6% 0.033 291.5)
-
Step 300
300
#C0BBE5
oklch(81% 0.059 290.5)
-
Step 400
400
#A096D8
oklch(70.6% 0.096 290.7)
-
Step 500
500
#8A7BCD
oklch(63.1% 0.121 290.9)
-
Step 600
600
#7563BA
oklch(55.7% 0.132 291)
-
Step 700
700
#6251A0
oklch(49% 0.123 291.1)
-
Step 800
800
#504382
oklch(42.7% 0.102 290.9)
-
Step 900
900
#423968
oklch(37.7% 0.079 290.9)
-
Step 950
950 (this color)
#231E39
oklch(25.5% 0.05 290.9)
#231E39 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) | #16223A | 0.024 |
| Deuteranopia (no green cones) | #162138 | 0.023 |
| Tritanopia (no blue cones) | #1E2328 | 0.042 |
| Achromatopsia (no color) | #222222 | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #231E39
#231E39
oklch(25.5% 0.05 290.9)
- #242504
#242504
oklch(25.5% 0.051 111.2)
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 #231E39, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.028
- Dark #1B2431 ΔE 0.031
- Jet #212529 ΔE 0.044
- Rich Black #0D1B2A ΔE 0.049
- Space Cadet #2B2D42 ΔE 0.052
- Eggplant #380835 ΔE 0.066
- Dark Purple #35063E ΔE 0.067
- Gunmetal #293241 ΔE 0.067
Use #231E39 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.