#21312E
Closest named color: Gunmetal (#293241). oklch(29.8% 0.022 181.9), rgb(33, 49, 46).
Aa
White text reads best on this color (13.60:1).
About this color
#21312E is a dark close to neutral grey. In OKLCH its lightness is 30%, its chroma 0.022. It has too little chroma to lean warm or cool. The nearest named color is Gunmetal (#293241), ΔE 0.038 away. White text reads best on it, at 13.60:1.
| Hue family | Neutrals |
| Lightness | dark (30%) |
| Chroma | close to neutral grey (0.022) |
| Temperature | neutral |
| Nearest name | Gunmetal (#293241) |
| Black text | 1.54:1 |
| White text | 13.60:1 |
Values
| HEX | #21312E |
| RGB | rgb(33, 49, 46) |
| HSL | hsl(169, 20%, 16%) |
| OKLCH | oklch(29.8% 0.022 181.9) |
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 #21312E | 13.60:1 | AAA | Lc -103.2 | Preferred for body text |
| Black text on #21312E | 1.54:1 | Fails | Lc 0.0 | Not readable |
| #21312E text on white | 13.60:1 | AAA | Lc 100.1 | Preferred for body text |
| #21312E text on black | 1.54:1 | 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
#F3F6F5
oklch(97.1% 0.003 174.5)
-
Step 100
100
#E5EBEA
oklch(93.5% 0.007 185.3)
-
Step 200
200
#CFDCDA
oklch(88.4% 0.014 185.9)
-
Step 300
300
#AFC6C2
oklch(80.8% 0.026 184.1)
-
Step 400
400
#85A9A2
oklch(70.6% 0.041 181.9)
-
Step 500
500
#65948C
oklch(63% 0.052 182.8)
-
Step 600
600
#4B7F76
oklch(55.7% 0.058 181.8)
-
Step 700
700
#3C6B63
oklch(49.2% 0.053 181.9)
-
Step 800
800
#325751
oklch(42.7% 0.044 182.7)
-
Step 900
900
#2C4843
oklch(37.8% 0.035 181.9)
-
Step 950
950 (this color)
#21312E
oklch(29.8% 0.022 181.9)
#21312E 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) | #302F2E | 0.024 |
| Deuteranopia (no green cones) | #2D2D2E | 0.022 |
| Tritanopia (no blue cones) | #1C3230 | 0.007 |
| Achromatopsia (no color) | #2E2E2E | 0.022 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21312E
#21312E
oklch(29.8% 0.022 181.9)
- #37292C
#37292C
oklch(29.8% 0.021 4.1)
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 #21312E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Gunmetal #293241 ΔE 0.038
- Jet #212529 ΔE 0.041
- Pakistan Green #283618 ΔE 0.045
- Space Cadet #2B2D42 ΔE 0.047
- Dark #1B2431 ΔE 0.051
- Onyx #343A40 ΔE 0.052
- Oxford Blue #1B263B ΔE 0.053
- Midnight Green #073B4C ΔE 0.055
Use #21312E 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.