#231C3D
Closest named color: Oxford Blue (#1B263B). oklch(25.3% 0.061 291.2), rgb(35, 28, 61).
Aa
White text reads best on this color (16.09:1).
About this color
#231C3D is a dark, muted purple. In OKLCH its lightness is 25%, its chroma 0.061 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 0.035 away. White text reads best on it, at 16.09:1.
| Hue family | Purples |
| Lightness | dark (25%) |
| Chroma | muted (0.061) |
| Temperature | in between |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.30:1 |
| White text | 16.09:1 |
Values
| HEX | #231C3D |
| RGB | rgb(35, 28, 61) |
| HSL | hsl(253, 37%, 17%) |
| OKLCH | oklch(25.3% 0.061 291.2) |
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 #231C3D | 16.09:1 | AAA | Lc -105.5 | Preferred for body text |
| Black text on #231C3D | 1.30:1 | Fails | Lc 0.0 | Not readable |
| #231C3D text on white | 16.09:1 | AAA | Lc 103.0 | Preferred for body text |
| #231C3D text on black | 1.30:1 | 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
#E9E8F7
oklch(93.6% 0.02 289.1)
-
Step 200
200
#D9D5F2
oklch(88.5% 0.04 291.9)
-
Step 300
300
#C0B9EC
oklch(80.9% 0.072 291)
-
Step 400
400
#A193E3
oklch(70.7% 0.116 291.2)
-
Step 500
500
#8B76DB
oklch(63% 0.148 291.1)
-
Step 600
600
#765DC8
oklch(55.6% 0.16 291.1)
-
Step 700
700
#644CAD
oklch(49.2% 0.149 291.4)
-
Step 800
800
#513F8C
oklch(42.7% 0.123 291.1)
-
Step 900
900
#433670
oklch(37.7% 0.096 291.4)
-
Step 950
950 (this color)
#231C3D
oklch(25.3% 0.061 291.2)
#231C3D 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) | #10223E | 0.033 |
| Deuteranopia (no green cones) | #11203C | 0.031 |
| Tritanopia (no blue cones) | #1C2229 | 0.050 |
| Achromatopsia (no color) | #212121 | 0.061 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #231C3D
#231C3D
oklch(25.3% 0.061 291.2)
- #242500
#242500
oklch(25.5% 0.056 111.3)
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 #231C3D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.035
- Dark #1B2431 ΔE 0.041
- Rich Black #0D1B2A ΔE 0.054
- Jet #212529 ΔE 0.055
- Space Cadet #2B2D42 ΔE 0.057
- Dark Purple #35063E ΔE 0.060
- Eggplant #380835 ΔE 0.062
- Dark Indigo #1F0954 ΔE 0.063
Use #231C3D 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.