#21232B
Closest named color: Jet (#212529). oklch(25.8% 0.015 274.2), rgb(33, 35, 43).
Aa
White text reads best on this color (15.67:1).
About this color
#21232B is a dark close to neutral grey. In OKLCH its lightness is 26%, its chroma 0.015. It has too little chroma to lean warm or cool. The nearest named color is Jet (#212529), ΔE 0.009 away. White text reads best on it, at 15.67:1.
| Hue family | Neutrals |
| Lightness | dark (26%) |
| Chroma | close to neutral grey (0.015) |
| Temperature | neutral |
| Nearest name | Jet (#212529) |
| Black text | 1.33:1 |
| White text | 15.67:1 |
Values
| HEX | #21232B |
| RGB | rgb(33, 35, 43) |
| HSL | hsl(228, 13%, 15%) |
| OKLCH | oklch(25.8% 0.015 274.2) |
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 #21232B | 15.67:1 | AAA | Lc -105.3 | Preferred for body text |
| Black text on #21232B | 1.33:1 | Fails | Lc 0.0 | Not readable |
| #21232B text on white | 15.67:1 | AAA | Lc 102.6 | Preferred for body text |
| #21232B 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
#F5F5F7
oklch(97.1% 0.003 286.4)
-
Step 100
100
#E9EAED
oklch(93.7% 0.004 271.4)
-
Step 200
200
#D7D9E0
oklch(88.6% 0.01 273.3)
-
Step 300
300
#BDC0CD
oklch(80.9% 0.018 275.6)
-
Step 400
400
#9BA0B3
oklch(70.8% 0.028 273.9)
-
Step 500
500
#8288A0
oklch(63% 0.037 274.2)
-
Step 600
600
#6C728B
oklch(55.6% 0.039 274.5)
-
Step 700
700
#5A5F76
oklch(49% 0.037 275.3)
-
Step 800
800
#494E60
oklch(42.6% 0.031 272.9)
-
Step 900
900
#3D414F
oklch(37.7% 0.025 272.6)
-
Step 950
950 (this color)
#21232B
oklch(25.8% 0.015 274.2)
#21232B 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) | #21242B | 0.004 |
| Deuteranopia (no green cones) | #20232B | 0.002 |
| Tritanopia (no blue cones) | #1F2426 | 0.012 |
| Achromatopsia (no color) | #232323 | 0.015 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21232B
#21232B
oklch(25.8% 0.015 274.2)
- #26231B
#26231B
oklch(25.7% 0.015 89.9)
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 #21232B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Jet #212529 ΔE 0.009
- Dark #1B2431 ΔE 0.014
- Oxford Blue #1B263B ΔE 0.030
- Rich Black #0D1B2A ΔE 0.046
- Space Cadet #2B2D42 ΔE 0.053
- Gunmetal #293241 ΔE 0.060
- Dark Brown #341C02 ΔE 0.068
- Chocolate Brown #411900 ΔE 0.084
Use #21232B 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.