#231D4A
Closest named color: Oxford Blue (#1B263B). oklch(26.5% 0.08 285.6), rgb(35, 29, 74).
Aa
White text reads best on this color (15.60:1).
About this color
#231D4A is a dark, moderately saturated purple. In OKLCH its lightness is 27%, its chroma 0.080 and its hue 286°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.045 away. White text reads best on it, at 15.60:1.
| Hue family | Purples |
| Lightness | dark (27%) |
| Chroma | moderately saturated (0.080) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.34:1 |
| White text | 15.60:1 |
Values
| HEX | #231D4A |
| RGB | rgb(35, 29, 74) |
| HSL | hsl(248, 44%, 20%) |
| OKLCH | oklch(26.5% 0.08 285.6) |
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 #231D4A | 15.60:1 | AAA | Lc -105.1 | Preferred for body text |
| Black text on #231D4A | 1.34:1 | Fails | Lc 0.0 | Not readable |
| #231D4A text on white | 15.60:1 | AAA | Lc 102.4 | Preferred for body text |
| #231D4A text on black | 1.34:1 | 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
#F4F4FE
oklch(97% 0.013 286.1)
-
Step 100
100
#E8E8FC
oklch(93.7% 0.027 285.9)
-
Step 200
200
#D5D5FB
oklch(88.5% 0.052 285.3)
-
Step 300
300
#BAB8FC
oklch(80.9% 0.095 285.4)
-
Step 400
400
#9990FB
oklch(70.7% 0.153 285.6)
-
Step 500
500
#8370F8
oklch(63.1% 0.195 285.7)
-
Step 600
600
#6E54E7
oklch(55.7% 0.212 285.3)
-
Step 700
700
#5D43C8
oklch(49.1% 0.196 285.6)
-
Step 800
800
#4B38A2
oklch(42.7% 0.163 285.4)
-
Step 900
900
#3E3281
oklch(37.7% 0.128 285.4)
-
Step 950
950 (this color)
#231D4A
oklch(26.5% 0.08 285.6)
#231D4A 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) | #05254C | 0.042 |
| Deuteranopia (no green cones) | #042249 | 0.041 |
| Tritanopia (no blue cones) | #162730 | 0.068 |
| Achromatopsia (no color) | #242424 | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #231D4A
#231D4A
oklch(26.5% 0.08 285.6)
- #292700
#292700
oklch(26.6% 0.057 106.8)
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 #231D4A, 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 Indigo #1F0954 ΔE 0.049
- Dark #1B2431 ΔE 0.058
- Space Cadet #2B2D42 ΔE 0.058
- Dark Purple #35063E ΔE 0.064
- Marine #042E60 ΔE 0.064
- Navy Blue #001146 ΔE 0.069
- Deep Purple #36013F ΔE 0.071
Use #231D4A 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.