#231E43
Closest named color: Oxford Blue (#1B263B). oklch(26.2% 0.067 287), rgb(35, 30, 67).
Aa
White text reads best on this color (15.69:1).
About this color
#231E43 is a dark, muted purple. In OKLCH its lightness is 26%, its chroma 0.067 and its hue 287°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.034 away. White text reads best on it, at 15.69:1.
| Hue family | Purples |
| Lightness | dark (26%) |
| Chroma | muted (0.067) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.33:1 |
| White text | 15.69:1 |
Values
| HEX | #231E43 |
| RGB | rgb(35, 30, 67) |
| HSL | hsl(248, 38%, 19%) |
| OKLCH | oklch(26.2% 0.067 287) |
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 #231E43 | 15.69:1 | AAA | Lc -105.2 | Preferred for body text |
| Black text on #231E43 | 1.33:1 | Fails | Lc 0.0 | Not readable |
| #231E43 text on white | 15.69:1 | AAA | Lc 102.5 | Preferred for body text |
| #231E43 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
#F5F4FC
oklch(97% 0.011 292)
-
Step 100
100
#E8E8F9
oklch(93.6% 0.023 286)
-
Step 200
200
#D6D5F6
oklch(88.4% 0.045 286.8)
-
Step 300
300
#BCB9F2
oklch(80.8% 0.08 286.9)
-
Step 400
400
#9C93EC
oklch(70.7% 0.128 287.3)
-
Step 500
500
#8576E5
oklch(63.1% 0.162 287)
-
Step 600
600
#705CD3
oklch(55.6% 0.176 286.9)
-
Step 700
700
#5E4AB7
oklch(49% 0.165 287.1)
-
Step 800
800
#4D3E94
oklch(42.7% 0.136 287.2)
-
Step 900
900
#3F3676
oklch(37.7% 0.106 286.6)
-
Step 950
950 (this color)
#231E43
oklch(26.2% 0.067 287)
#231E43 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) | #0F2444 | 0.033 |
| Deuteranopia (no green cones) | #0E2242 | 0.033 |
| Tritanopia (no blue cones) | #1A262D | 0.057 |
| Achromatopsia (no color) | #232323 | 0.068 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #231E43
#231E43
oklch(26.2% 0.067 287)
- #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 #231E43, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.034
- Dark #1B2431 ΔE 0.045
- Space Cadet #2B2D42 ΔE 0.052
- Dark Indigo #1F0954 ΔE 0.059
- Jet #212529 ΔE 0.060
- Rich Black #0D1B2A ΔE 0.062
- Dark Purple #35063E ΔE 0.064
- Eggplant #380835 ΔE 0.068
Use #231E43 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.