#213331
Closest named color: Gunmetal (#293241). oklch(30.5% 0.024 187.4), rgb(33, 51, 49).
Aa
White text reads best on this color (13.26:1).
About this color
#213331 is a dark close to neutral grey. In OKLCH its lightness is 30%, its chroma 0.024. It has too little chroma to lean warm or cool. The nearest named color is Gunmetal (#293241), ΔE 0.034 away. White text reads best on it, at 13.26:1.
| Hue family | Neutrals |
| Lightness | dark (30%) |
| Chroma | close to neutral grey (0.024) |
| Temperature | neutral |
| Nearest name | Gunmetal (#293241) |
| Black text | 1.58:1 |
| White text | 13.26:1 |
Values
| HEX | #213331 |
| RGB | rgb(33, 51, 49) |
| HSL | hsl(173, 21%, 16%) |
| OKLCH | oklch(30.5% 0.024 187.4) |
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 #213331 | 13.26:1 | AAA | Lc -102.8 | Preferred for body text |
| Black text on #213331 | 1.58:1 | Fails | Lc 0.0 | Not readable |
| #213331 text on white | 13.26:1 | AAA | Lc 99.6 | Preferred for body text |
| #213331 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
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E4ECEB
oklch(93.7% 0.009 188.1)
-
Step 200
200
#CEDDDB
oklch(88.6% 0.016 187.3)
-
Step 300
300
#ADC7C4
oklch(80.9% 0.028 188.2)
-
Step 400
400
#81AAA5
oklch(70.7% 0.045 186.9)
-
Step 500
500
#60958F
oklch(63.1% 0.057 186.8)
-
Step 600
600
#447F7A
oklch(55.5% 0.062 188.4)
-
Step 700
700
#366C66
oklch(49.2% 0.059 186.1)
-
Step 800
800
#2D5853
oklch(42.8% 0.049 185.8)
-
Step 900
900
#294845
oklch(37.7% 0.037 187.9)
-
Step 950
950 (this color)
#213331
oklch(30.5% 0.024 187.4)
#213331 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) | #313131 | 0.025 |
| Deuteranopia (no green cones) | #2E2F31 | 0.023 |
| Tritanopia (no blue cones) | #1B3432 | 0.008 |
| Achromatopsia (no color) | #303030 | 0.024 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #213331
#213331
oklch(30.5% 0.024 187.4)
- #3A2A2D
#3A2A2D
oklch(30.5% 0.024 6.1)
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 #213331, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Gunmetal #293241 ΔE 0.034
- Onyx #343A40 ΔE 0.045
- Pakistan Green #283618 ΔE 0.045
- Space Cadet #2B2D42 ΔE 0.046
- Jet #212529 ΔE 0.047
- Midnight Green #073B4C ΔE 0.049
- Dark Blue Grey #1F3B4D ΔE 0.050
- Dark #1B2431 ΔE 0.056
Use #213331 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.