#231A3A
Closest named color: Oxford Blue (#1B263B). oklch(24.7% 0.06 294.6), rgb(35, 26, 58).
Aa
White text reads best on this color (16.40:1).
About this color
#231A3A is a very dark, muted purple. In OKLCH its lightness is 25%, its chroma 0.060 and its hue 295°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.040 away. White text reads best on it, at 16.40:1.
| Hue family | Purples |
| Lightness | very dark (25%) |
| Chroma | muted (0.060) |
| Temperature | in between |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.28:1 |
| White text | 16.40:1 |
Values
| HEX | #231A3A |
| RGB | rgb(35, 26, 58) |
| HSL | hsl(257, 38%, 16%) |
| OKLCH | oklch(24.7% 0.06 294.6) |
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 #231A3A | 16.40:1 | AAA | Lc -105.8 | Preferred for body text |
| Black text on #231A3A | 1.28:1 | Fails | Lc 0.0 | Not readable |
| #231A3A text on white | 16.40:1 | AAA | Lc 103.3 | Preferred for body text |
| #231A3A text on black | 1.28:1 | 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
#EAE7F7
oklch(93.5% 0.022 294.6)
-
Step 200
200
#DAD5F1
oklch(88.6% 0.038 293.8)
-
Step 300
300
#C3B8EA
oklch(80.8% 0.071 294.9)
-
Step 400
400
#A592E0
oklch(70.7% 0.113 294.5)
-
Step 500
500
#9075D7
oklch(63.1% 0.145 294.6)
-
Step 600
600
#7B5CC4
oklch(55.6% 0.156 294.5)
-
Step 700
700
#684BA9
oklch(49.1% 0.145 294.7)
-
Step 800
800
#553E89
oklch(42.7% 0.12 294.9)
-
Step 900
900
#46356E
oklch(37.7% 0.095 295.2)
-
Step 950
950 (this color)
#231A3A
oklch(24.7% 0.06 294.6)
#231A3A 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) | #0F203B | 0.035 |
| Deuteranopia (no green cones) | #111F39 | 0.033 |
| Tritanopia (no blue cones) | #1E2027 | 0.047 |
| Achromatopsia (no color) | #1F1F1F | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #231A3A
#231A3A
oklch(24.7% 0.06 294.6)
- #202300
#202300
oklch(24.5% 0.055 114.4)
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 #231A3A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.040
- Dark #1B2431 ΔE 0.043
- Rich Black #0D1B2A ΔE 0.051
- Jet #212529 ΔE 0.056
- Dark Purple #35063E ΔE 0.057
- Eggplant #380835 ΔE 0.059
- Midnight Purple #280137 ΔE 0.061
- Very Dark Purple #2A0134 ΔE 0.062
Use #231A3A 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.