#231C24
Closest named color: Jet (#212529). oklch(23.8% 0.018 322.1), rgb(35, 28, 36).
Aa
White text reads best on this color (16.62:1).
About this color
#231C24 is a very dark close to neutral grey. In OKLCH its lightness is 24%, its chroma 0.018. It has too little chroma to lean warm or cool. The nearest named color is Jet (#212529), ΔE 0.030 away. White text reads best on it, at 16.62:1.
| Hue family | Neutrals |
| Lightness | very dark (24%) |
| Chroma | close to neutral grey (0.018) |
| Temperature | neutral |
| Nearest name | Jet (#212529) |
| Black text | 1.26:1 |
| White text | 16.62:1 |
Values
| HEX | #231C24 |
| RGB | rgb(35, 28, 36) |
| HSL | hsl(293, 13%, 13%) |
| OKLCH | oklch(23.8% 0.018 322.1) |
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 #231C24 | 16.62:1 | AAA | Lc -106.0 | Preferred for body text |
| Black text on #231C24 | 1.26:1 | Fails | Lc 0.0 | Not readable |
| #231C24 text on white | 16.62:1 | AAA | Lc 103.6 | Preferred for body text |
| #231C24 text on black | 1.26:1 | 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
#F6F5F6
oklch(97.1% 0.002 325.6)
-
Step 100
100
#ECE8EC
oklch(93.5% 0.007 325.6)
-
Step 200
200
#DDD7DE
oklch(88.6% 0.011 321.3)
-
Step 300
300
#C7BCC9
oklch(80.8% 0.022 321)
-
Step 400
400
#AB9AAE
oklch(70.7% 0.035 321.2)
-
Step 500
500
#97819A
oklch(63.2% 0.045 322.2)
-
Step 600
600
#816A84
oklch(55.5% 0.048 322.4)
-
Step 700
700
#6D5870
oklch(49% 0.046 322.1)
-
Step 800
800
#59485B
oklch(42.6% 0.038 322.8)
-
Step 900
900
#493D4B
oklch(37.8% 0.028 321.5)
-
Step 950
950 (this color)
#231C24
oklch(23.8% 0.018 322.1)
#231C24 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) | #1B1E24 | 0.016 |
| Deuteranopia (no green cones) | #1D1F24 | 0.015 |
| Tritanopia (no blue cones) | #231D1F | 0.011 |
| Achromatopsia (no color) | #1E1E1E | 0.019 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #231C24
#231C24
oklch(23.8% 0.018 322.1)
- #1A2119
#1A2119
oklch(23.8% 0.018 141.6)
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 #231C24, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Jet #212529 ΔE 0.030
- Dark #1B2431 ΔE 0.033
- Rich Black #0D1B2A ΔE 0.040
- Oxford Blue #1B263B ΔE 0.048
- Dark Brown #341C02 ΔE 0.063
- Space Cadet #2B2D42 ΔE 0.072
- Eggplant #380835 ΔE 0.078
- Rich Navy #001219 ΔE 0.079
Use #231C24 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.