#231F2F
Closest named color: Dark (#1B2431). oklch(25.1% 0.03 295.6), rgb(35, 31, 47).
Aa
White text reads best on this color (16.04:1).
About this color
#231F2F is a dark, muted purple. In OKLCH its lightness is 25%, its chroma 0.030 and its hue 296°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark (#1B2431), ΔE 0.020 away. White text reads best on it, at 16.04:1.
| Hue family | Purples |
| Lightness | dark (25%) |
| Chroma | muted (0.030) |
| Temperature | in between |
| Nearest name | Dark (#1B2431) |
| Black text | 1.30:1 |
| White text | 16.04:1 |
Values
| HEX | #231F2F |
| RGB | rgb(35, 31, 47) |
| HSL | hsl(255, 21%, 15%) |
| OKLCH | oklch(25.1% 0.03 295.6) |
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 #231F2F | 16.04:1 | AAA | Lc -105.6 | Preferred for body text |
| Black text on #231F2F | 1.30:1 | Fails | Lc 0.0 | Not readable |
| #231F2F text on white | 16.04:1 | AAA | Lc 103.0 | Preferred for body text |
| #231F2F 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
#F5F5F8
oklch(97.1% 0.004 286.3)
-
Step 100
100
#EAE9F0
oklch(93.7% 0.009 292.8)
-
Step 200
200
#DAD7E5
oklch(88.6% 0.019 295.8)
-
Step 300
300
#C2BCD6
oklch(80.8% 0.037 296.1)
-
Step 400
400
#A39AC1
oklch(70.7% 0.057 295.5)
-
Step 500
500
#8D81B1
oklch(63.2% 0.072 295.7)
-
Step 600
600
#776A9D
oklch(55.7% 0.079 295.4)
-
Step 700
700
#645886
oklch(49.1% 0.073 295.6)
-
Step 800
800
#52486D
oklch(42.7% 0.061 296.1)
-
Step 900
900
#433C58
oklch(37.5% 0.048 295.5)
-
Step 950
950 (this color)
#231F2F
oklch(25.1% 0.03 295.6)
#231F2F 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) | #1B2130 | 0.015 |
| Deuteranopia (no green cones) | #1C212F | 0.014 |
| Tritanopia (no blue cones) | #212225 | 0.025 |
| Achromatopsia (no color) | #212121 | 0.031 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #231F2F
#231F2F
oklch(25.1% 0.03 295.6)
- #212413
#212413
oklch(25.2% 0.03 116.8)
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 #231F2F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark #1B2431 ΔE 0.020
- Jet #212529 ΔE 0.027
- Oxford Blue #1B263B ΔE 0.030
- Rich Black #0D1B2A ΔE 0.042
- Space Cadet #2B2D42 ΔE 0.055
- Gunmetal #293241 ΔE 0.067
- Eggplant #380835 ΔE 0.073
- Dark Brown #341C02 ΔE 0.077
Use #231F2F 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.