#213531
Closest named color: Gunmetal (#293241). oklch(31% 0.027 180.6), rgb(33, 53, 49).
Aa
White text reads best on this color (12.97:1).
About this color
#213531 is a dark close to neutral grey. In OKLCH its lightness is 31%, its chroma 0.027. It has too little chroma to lean warm or cool. The nearest named color is Gunmetal (#293241), ΔE 0.037 away. White text reads best on it, at 12.97:1.
| Hue family | Neutrals |
| Lightness | dark (31%) |
| Chroma | close to neutral grey (0.027) |
| Temperature | neutral |
| Nearest name | Gunmetal (#293241) |
| Black text | 1.61:1 |
| White text | 12.97:1 |
Values
| HEX | #213531 |
| RGB | rgb(33, 53, 49) |
| HSL | hsl(168, 23%, 17%) |
| OKLCH | oklch(31% 0.027 180.6) |
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 #213531 | 12.97:1 | AAA | Lc -102.4 | Preferred for body text |
| Black text on #213531 | 1.61:1 | Fails | Lc 0.0 | Not readable |
| #213531 text on white | 12.97:1 | AAA | Lc 99.2 | Preferred for body text |
| #213531 text on black | 1.61:1 | 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
#E4ECEA
oklch(93.6% 0.009 179.6)
-
Step 200
200
#CDDDD9
oklch(88.4% 0.018 179.3)
-
Step 300
300
#ABC8C1
oklch(80.9% 0.033 179.2)
-
Step 400
400
#7EABA2
oklch(70.6% 0.05 181.1)
-
Step 500
500
#5B978B
oklch(63.2% 0.066 179.9)
-
Step 600
600
#3F8175
oklch(55.6% 0.07 180.2)
-
Step 700
700
#306D62
oklch(49.1% 0.066 179.9)
-
Step 800
800
#295950
oklch(42.7% 0.055 179.7)
-
Step 900
900
#264943
oklch(37.7% 0.042 181.6)
-
Step 950
950 (this color)
#213531
oklch(31% 0.027 180.6)
#213531 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) | #333331 | 0.028 |
| Deuteranopia (no green cones) | #303031 | 0.027 |
| Tritanopia (no blue cones) | #1B3634 | 0.008 |
| Achromatopsia (no color) | #313131 | 0.027 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #213531
#213531
oklch(31% 0.027 180.6)
- #3C2B30
#3C2B30
oklch(31.1% 0.026 359.4)
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 #213531, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Gunmetal #293241 ΔE 0.037
- Pakistan Green #283618 ΔE 0.042
- Onyx #343A40 ΔE 0.043
- Midnight Green #073B4C ΔE 0.048
- Dark Blue Grey #1F3B4D ΔE 0.049
- Space Cadet #2B2D42 ΔE 0.050
- Jet #212529 ΔE 0.054
- Oxford Blue #1B263B ΔE 0.063
Use #213531 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.