#231838
Closest named color: Oxford Blue (#1B263B). oklch(24.1% 0.06 297.6), rgb(35, 24, 56).
Aa
White text reads best on this color (16.67:1).
About this color
#231838 is a very dark, muted purple. In OKLCH its lightness is 24%, its chroma 0.060 and its hue 298°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.045 away. White text reads best on it, at 16.67:1.
| Hue family | Purples |
| Lightness | very dark (24%) |
| Chroma | muted (0.060) |
| Temperature | in between |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.25:1 |
| White text | 16.67:1 |
Values
| HEX | #231838 |
| RGB | rgb(35, 24, 56) |
| HSL | hsl(261, 40%, 16%) |
| OKLCH | oklch(24.1% 0.06 297.6) |
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 #231838 | 16.67:1 | AAA | Lc -106.0 | Preferred for body text |
| Black text on #231838 | 1.25:1 | Fails | Lc 0.0 | Not readable |
| #231838 text on white | 16.67:1 | AAA | Lc 103.5 | Preferred for body text |
| #231838 text on black | 1.25:1 | 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
#F6F4FB
oklch(97.1% 0.009 299.2)
-
Step 100
100
#EBE7F6
oklch(93.5% 0.021 298.2)
-
Step 200
200
#DCD4F1
oklch(88.5% 0.04 298.2)
-
Step 300
300
#C5B7EA
oklch(80.8% 0.072 297.3)
-
Step 400
400
#A991DF
oklch(70.8% 0.114 297.6)
-
Step 500
500
#9473D6
oklch(63% 0.147 297.4)
-
Step 600
600
#7F5AC3
oklch(55.6% 0.158 297.2)
-
Step 700
700
#6C49A8
oklch(49.1% 0.147 297.7)
-
Step 800
800
#583D88
oklch(42.8% 0.121 297.7)
-
Step 900
900
#48346D
oklch(37.6% 0.096 297.8)
-
Step 950
950 (this color)
#231838
oklch(24.1% 0.06 297.6)
#231838 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) | #0D1E39 | 0.039 |
| Deuteranopia (no green cones) | #101E37 | 0.036 |
| Tritanopia (no blue cones) | #1E1E25 | 0.047 |
| Achromatopsia (no color) | #1E1E1E | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #231838
#231838
oklch(24.1% 0.06 297.6)
- #1D2300
#1D2300
oklch(24.2% 0.057 118.8)
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 #231838, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.045
- Dark #1B2431 ΔE 0.046
- Rich Black #0D1B2A ΔE 0.050
- Dark Purple #35063E ΔE 0.055
- Eggplant #380835 ΔE 0.056
- Midnight Purple #280137 ΔE 0.056
- Very Dark Purple #2A0134 ΔE 0.057
- Jet #212529 ΔE 0.059
Use #231838 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.