#231D45
Closest named color: Oxford Blue (#1B263B). oklch(26.1% 0.072 287.2), rgb(35, 29, 69).
Aa
White text reads best on this color (15.75:1).
About this color
#231D45 is a dark, moderately saturated purple. In OKLCH its lightness is 26%, its chroma 0.072 and its hue 287°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.039 away. White text reads best on it, at 15.75:1.
| Hue family | Purples |
| Lightness | dark (26%) |
| Chroma | moderately saturated (0.072) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.33:1 |
| White text | 15.75:1 |
Values
| HEX | #231D45 |
| RGB | rgb(35, 29, 69) |
| HSL | hsl(249, 41%, 19%) |
| OKLCH | oklch(26.1% 0.072 287.2) |
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 #231D45 | 15.75:1 | AAA | Lc -105.2 | Preferred for body text |
| Black text on #231D45 | 1.33:1 | Fails | Lc 0.0 | Not readable |
| #231D45 text on white | 15.75:1 | AAA | Lc 102.6 | Preferred for body text |
| #231D45 text on black | 1.33:1 | 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
#E8E8FA
oklch(93.6% 0.024 285.9)
-
Step 200
200
#D6D5F8
oklch(88.5% 0.048 286.7)
-
Step 300
300
#BCB9F6
oklch(81% 0.086 286.6)
-
Step 400
400
#9C92F1
oklch(70.8% 0.137 287.2)
-
Step 500
500
#8573EC
oklch(63% 0.176 287.1)
-
Step 600
600
#7158DA
oklch(55.6% 0.19 287.4)
-
Step 700
700
#5F47BD
oklch(49% 0.177 287.4)
-
Step 800
800
#4D3B99
oklch(42.6% 0.147 287.2)
-
Step 900
900
#40347A
oklch(37.7% 0.115 287.5)
-
Step 950
950 (this color)
#231D45
oklch(26.1% 0.072 287.2)
#231D45 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) | #0B2446 | 0.037 |
| Deuteranopia (no green cones) | #0A2244 | 0.037 |
| Tritanopia (no blue cones) | #19252D | 0.060 |
| Achromatopsia (no color) | #232323 | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #231D45
#231D45
oklch(26.1% 0.072 287.2)
- #282600
#282600
oklch(26.2% 0.056 106.7)
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 #231D45, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.039
- Dark #1B2431 ΔE 0.050
- Dark Indigo #1F0954 ΔE 0.054
- Space Cadet #2B2D42 ΔE 0.056
- Dark Purple #35063E ΔE 0.062
- Rich Black #0D1B2A ΔE 0.065
- Jet #212529 ΔE 0.065
- Eggplant #380835 ΔE 0.067
Use #231D45 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.