#231A28
Closest named color: Dark (#1B2431). oklch(23.5% 0.029 313.2), rgb(35, 26, 40).
Aa
White text reads best on this color (16.80:1).
About this color
#231A28 is a very dark close to neutral grey. In OKLCH its lightness is 24%, its chroma 0.029. It has too little chroma to lean warm or cool. The nearest named color is Dark (#1B2431), ΔE 0.035 away. White text reads best on it, at 16.80:1.
| Hue family | Neutrals |
| Lightness | very dark (24%) |
| Chroma | close to neutral grey (0.029) |
| Temperature | neutral |
| Nearest name | Dark (#1B2431) |
| Black text | 1.24:1 |
| White text | 16.80:1 |
Values
| HEX | #231A28 |
| RGB | rgb(35, 26, 40) |
| HSL | hsl(279, 21%, 13%) |
| OKLCH | oklch(23.5% 0.029 313.2) |
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 #231A28 | 16.80:1 | AAA | Lc -106.1 | Preferred for body text |
| Black text on #231A28 | 1.24:1 | Fails | Lc 0.0 | Not readable |
| #231A28 text on white | 16.80:1 | AAA | Lc 103.7 | Preferred for body text |
| #231A28 text on black | 1.24:1 | 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
#F6F4F8
oklch(97% 0.006 308.4)
-
Step 100
100
#ECE8EF
oklch(93.6% 0.01 311.2)
-
Step 200
200
#DED6E2
oklch(88.6% 0.018 314.7)
-
Step 300
300
#C9BAD1
oklch(80.8% 0.036 314.1)
-
Step 400
400
#AD97BA
oklch(70.7% 0.056 312.9)
-
Step 500
500
#997DA8
oklch(63.1% 0.071 313.6)
-
Step 600
600
#836694
oklch(55.6% 0.077 312.6)
-
Step 700
700
#6F547E
oklch(49% 0.073 313.1)
-
Step 800
800
#5B4566
oklch(42.7% 0.06 314.1)
-
Step 900
900
#4A3A53
oklch(37.6% 0.047 313.1)
-
Step 950
950 (this color)
#231A28
oklch(23.5% 0.029 313.2)
#231A28 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) | #181D29 | 0.022 |
| Deuteranopia (no green cones) | #1A1E28 | 0.021 |
| Tritanopia (no blue cones) | #231C1F | 0.021 |
| Achromatopsia (no color) | #1D1D1D | 0.030 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #231A28
#231A28
oklch(23.5% 0.029 313.2)
- #192113
#192113
oklch(23.5% 0.028 132.4)
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 #231A28, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark #1B2431 ΔE 0.035
- Jet #212529 ΔE 0.038
- Rich Black #0D1B2A ΔE 0.038
- Oxford Blue #1B263B ΔE 0.047
- Eggplant #380835 ΔE 0.069
- Dark Brown #341C02 ΔE 0.073
- Space Cadet #2B2D42 ΔE 0.073
- Very Dark Purple #2A0134 ΔE 0.074
Use #231A28 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.