#231A41
Closest named color: Oxford Blue (#1B263B). oklch(25.2% 0.071 291), rgb(35, 26, 65).
Aa
White text reads best on this color (16.20:1).
About this color
#231A41 is a dark, moderately saturated purple. In OKLCH its lightness is 25%, its chroma 0.071 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 0.043 away. White text reads best on it, at 16.20:1.
| Hue family | Purples |
| Lightness | dark (25%) |
| Chroma | moderately saturated (0.071) |
| Temperature | in between |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.29:1 |
| White text | 16.20:1 |
Values
| HEX | #231A41 |
| RGB | rgb(35, 26, 65) |
| HSL | hsl(254, 43%, 18%) |
| OKLCH | oklch(25.2% 0.071 291) |
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 #231A41 | 16.20:1 | AAA | Lc -105.6 | Preferred for body text |
| Black text on #231A41 | 1.29:1 | Fails | Lc 0.0 | Not readable |
| #231A41 text on white | 16.20:1 | AAA | Lc 103.0 | Preferred for body text |
| #231A41 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
#E9E7F9
oklch(93.5% 0.024 291)
-
Step 200
200
#D9D4F6
oklch(88.5% 0.047 292.2)
-
Step 300
300
#C0B8F3
oklch(81% 0.083 290.6)
-
Step 400
400
#A190EE
oklch(70.7% 0.135 290.8)
-
Step 500
500
#8C71E8
oklch(63% 0.173 291.1)
-
Step 600
600
#7856D6
oklch(55.6% 0.188 291.3)
-
Step 700
700
#6546BA
oklch(49.2% 0.174 290.9)
-
Step 800
800
#523A96
oklch(42.7% 0.144 291.1)
-
Step 900
900
#433378
oklch(37.7% 0.113 290.6)
-
Step 950
950 (this color)
#231A41
oklch(25.2% 0.071 291)
#231A41 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) | #092142 | 0.041 |
| Deuteranopia (no green cones) | #0A2040 | 0.040 |
| Tritanopia (no blue cones) | #1B222A | 0.058 |
| Achromatopsia (no color) | #202020 | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #231A41
#231A41
oklch(25.2% 0.071 291)
- #232400
#232400
oklch(25.1% 0.055 111.3)
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 #231A41, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.043
- Dark #1B2431 ΔE 0.051
- Dark Indigo #1F0954 ΔE 0.053
- Dark Purple #35063E ΔE 0.056
- Rich Black #0D1B2A ΔE 0.060
- Eggplant #380835 ΔE 0.061
- Midnight Purple #280137 ΔE 0.062
- Space Cadet #2B2D42 ΔE 0.063
Use #231A41 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.