#231E3F
Closest named color: Oxford Blue (#1B263B). oklch(25.9% 0.061 288.4), rgb(35, 30, 63).
Aa
White text reads best on this color (15.80:1).
About this color
#231E3F is a dark, muted purple. In OKLCH its lightness is 26%, its chroma 0.061 and its hue 288°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.031 away. White text reads best on it, at 15.80:1.
| Hue family | Purples |
| Lightness | dark (26%) |
| Chroma | muted (0.061) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.32:1 |
| White text | 15.80:1 |
Values
| HEX | #231E3F |
| RGB | rgb(35, 30, 63) |
| HSL | hsl(249, 35%, 18%) |
| OKLCH | oklch(25.9% 0.061 288.4) |
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 #231E3F | 15.80:1 | AAA | Lc -105.3 | Preferred for body text |
| Black text on #231E3F | 1.32:1 | Fails | Lc 0.0 | Not readable |
| #231E3F text on white | 15.80:1 | AAA | Lc 102.7 | Preferred for body text |
| #231E3F text on black | 1.32:1 | 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
#F5F5FC
oklch(97.2% 0.009 286.2)
-
Step 100
100
#E9E8F7
oklch(93.6% 0.02 289.1)
-
Step 200
200
#D7D6F3
oklch(88.6% 0.04 287.1)
-
Step 300
300
#BEBAED
oklch(80.9% 0.072 288.3)
-
Step 400
400
#9E94E4
oklch(70.7% 0.116 288.8)
-
Step 500
500
#8778DC
oklch(63.1% 0.147 288.3)
-
Step 600
600
#725FC9
oklch(55.6% 0.158 288.4)
-
Step 700
700
#604DAE
oklch(49% 0.149 288.7)
-
Step 800
800
#4E408D
oklch(42.7% 0.123 288.4)
-
Step 900
900
#403771
oklch(37.7% 0.096 288)
-
Step 950
950 (this color)
#231E3F
oklch(25.9% 0.061 288.4)
#231E3F 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) | #122340 | 0.029 |
| Deuteranopia (no green cones) | #12223E | 0.029 |
| Tritanopia (no blue cones) | #1B252B | 0.052 |
| Achromatopsia (no color) | #232323 | 0.061 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #231E3F
#231E3F
oklch(25.9% 0.061 288.4)
- #262600
#262600
oklch(26% 0.057 109.8)
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 #231E3F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.031
- Dark #1B2431 ΔE 0.039
- Space Cadet #2B2D42 ΔE 0.052
- Jet #212529 ΔE 0.054
- Rich Black #0D1B2A ΔE 0.057
- Dark Purple #35063E ΔE 0.064
- Dark Indigo #1F0954 ΔE 0.065
- Eggplant #380835 ΔE 0.066
Use #231E3F 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.