#231A42
Closest named color: Oxford Blue (#1B263B). oklch(25.3% 0.073 290.6), rgb(35, 26, 66).
Aa
White text reads best on this color (16.18:1).
About this color
#231A42 is a dark, moderately saturated purple. In OKLCH its lightness is 25%, its chroma 0.073 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 0.044 away. White text reads best on it, at 16.18:1.
| Hue family | Purples |
| Lightness | dark (25%) |
| Chroma | moderately saturated (0.073) |
| Temperature | in between |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.29:1 |
| White text | 16.18:1 |
Values
| HEX | #231A42 |
| RGB | rgb(35, 26, 66) |
| HSL | hsl(253, 43%, 18%) |
| OKLCH | oklch(25.3% 0.073 290.6) |
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 #231A42 | 16.18:1 | AAA | Lc -105.6 | Preferred for body text |
| Black text on #231A42 | 1.29:1 | Fails | Lc 0.0 | Not readable |
| #231A42 text on white | 16.18:1 | AAA | Lc 103.0 | Preferred for body text |
| #231A42 text on black | 1.29:1 | 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
#F5F4FD
oklch(97% 0.012 291.3)
-
Step 100
100
#E9E7FA
oklch(93.5% 0.026 290.7)
-
Step 200
200
#D8D4F7
oklch(88.4% 0.048 290.6)
-
Step 300
300
#C0B7F5
oklch(80.8% 0.087 291)
-
Step 400
400
#A190F0
oklch(70.8% 0.138 290.6)
-
Step 500
500
#8C71EA
oklch(63.1% 0.176 290.8)
-
Step 600
600
#7756D8
oklch(55.6% 0.19 290.6)
-
Step 700
700
#6445BC
oklch(49.1% 0.178 290.3)
-
Step 800
800
#523998
oklch(42.7% 0.148 290.9)
-
Step 900
900
#433379
oklch(37.8% 0.115 290.4)
-
Step 950
950 (this color)
#231A42
oklch(25.3% 0.073 290.6)
#231A42 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) | #072143 | 0.042 |
| Deuteranopia (no green cones) | #092041 | 0.041 |
| Tritanopia (no blue cones) | #1A222B | 0.058 |
| Achromatopsia (no color) | #212121 | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #231A42
#231A42
oklch(25.3% 0.073 290.6)
- #242400
#242400
oklch(25.2% 0.055 109.8)
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 #231A42, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.044
- Dark Indigo #1F0954 ΔE 0.051
- Dark #1B2431 ΔE 0.052
- Dark Purple #35063E ΔE 0.056
- Rich Black #0D1B2A ΔE 0.061
- Eggplant #380835 ΔE 0.062
- Midnight Purple #280137 ΔE 0.062
- Space Cadet #2B2D42 ΔE 0.064
Use #231A42 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.