#21323D
Closest named color: Gunmetal (#293241). oklch(30.7% 0.03 237.4), rgb(33, 50, 61).
Aa
White text reads best on this color (13.22:1).
About this color
#21323D is a dark close to neutral grey. In OKLCH its lightness is 31%, its chroma 0.030. It has too little chroma to lean warm or cool. The nearest named color is Gunmetal (#293241), ΔE 0.014 away. White text reads best on it, at 13.22:1.
| Hue family | Neutrals |
| Lightness | dark (31%) |
| Chroma | close to neutral grey (0.030) |
| Temperature | neutral |
| Nearest name | Gunmetal (#293241) |
| Black text | 1.58:1 |
| White text | 13.22:1 |
Values
| HEX | #21323D |
| RGB | rgb(33, 50, 61) |
| HSL | hsl(204, 30%, 18%) |
| OKLCH | oklch(30.7% 0.03 237.4) |
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 #21323D | 13.22:1 | AAA | Lc -102.7 | Preferred for body text |
| Black text on #21323D | 1.58:1 | Fails | Lc 0.0 | Not readable |
| #21323D text on white | 13.22:1 | AAA | Lc 99.5 | Preferred for body text |
| #21323D text on black | 1.58:1 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E4EBF0
oklch(93.6% 0.01 238.5)
-
Step 200
200
#CEDBE5
oklch(88.5% 0.02 240.8)
-
Step 300
300
#ACC5D5
oklch(81% 0.035 236)
-
Step 400
400
#7FA6C0
oklch(70.6% 0.057 237.8)
-
Step 500
500
#5E90B0
oklch(63% 0.072 237.6)
-
Step 600
600
#437A9C
oklch(55.6% 0.079 237.6)
-
Step 700
700
#346785
oklch(49.2% 0.073 236.7)
-
Step 800
800
#2C546C
oklch(42.7% 0.06 236.8)
-
Step 900
900
#284558
oklch(37.6% 0.048 238.6)
-
Step 950
950 (this color)
#21323D
oklch(30.7% 0.03 237.4)
#21323D 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) | #2D323E | 0.018 |
| Deuteranopia (no green cones) | #292F3D | 0.015 |
| Tritanopia (no blue cones) | #173536 | 0.023 |
| Achromatopsia (no color) | #303030 | 0.030 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21323D
#21323D
oklch(30.7% 0.03 237.4)
- #3B2C21
#3B2C21
oklch(30.7% 0.029 57.6)
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 #21323D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Gunmetal #293241 ΔE 0.014
- Space Cadet #2B2D42 ΔE 0.026
- Dark Blue Grey #1F3B4D ΔE 0.036
- Midnight Green #073B4C ΔE 0.037
- Onyx #343A40 ΔE 0.042
- Oxford Blue #1B263B ΔE 0.043
- Prussian Blue #1D3557 ΔE 0.046
- Jet #212529 ΔE 0.050
Use #21323D 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.