#213938
Closest named color: Onyx (#343A40). oklch(32.5% 0.03 192.4), rgb(33, 57, 56).
Aa
White text reads best on this color (12.30:1).
About this color
#213938 is a dark, muted teal or cyan. In OKLCH its lightness is 32%, its chroma 0.030 and its hue 192°. Its hue sits on the cool side of the wheel. The nearest named color is Onyx (#343A40), ΔE 0.032 away. White text reads best on it, at 12.30:1.
| Hue family | Teals and cyans |
| Lightness | dark (32%) |
| Chroma | muted (0.030) |
| Temperature | cool |
| Nearest name | Onyx (#343A40) |
| Black text | 1.70:1 |
| White text | 12.30:1 |
Values
| HEX | #213938 |
| RGB | rgb(33, 57, 56) |
| HSL | hsl(178, 27%, 18%) |
| OKLCH | oklch(32.5% 0.03 192.4) |
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 #213938 | 12.30:1 | AAA | Lc -101.5 | Preferred for body text |
| Black text on #213938 | 1.70:1 | Fails | Lc 0.0 | Not readable |
| #213938 text on white | 12.30:1 | AAA | Lc 98.0 | Preferred for body text |
| #213938 text on black | 1.70:1 | 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 900.
-
Step 50
50
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E5EBEB
oklch(93.6% 0.006 197)
-
Step 200
200
#D0DCDB
oklch(88.5% 0.013 190.9)
-
Step 300
300
#B1C5C4
oklch(80.8% 0.022 193.1)
-
Step 400
400
#87A8A6
oklch(70.6% 0.036 191.8)
-
Step 500
500
#699391
oklch(63.2% 0.046 192.3)
-
Step 600
600
#4F7D7B
oklch(55.6% 0.05 192.3)
-
Step 700
700
#406968
oklch(49% 0.046 193.8)
-
Step 800
800
#355654
oklch(42.7% 0.039 190.9)
-
Step 900
900 (this color)
#213938
oklch(32.5% 0.03 192.4)
-
Step 950
950
#1C2929
oklch(26.9% 0.018 196.1)
#213938 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) | #363738 | 0.031 |
| Deuteranopia (no green cones) | #323338 | 0.031 |
| Tritanopia (no blue cones) | #183A39 | 0.010 |
| Achromatopsia (no color) | #353535 | 0.030 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #213938
#213938
oklch(32.5% 0.03 192.4)
- #422E30
#422E30
oklch(32.5% 0.03 12.2)
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 #213938, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.032
- Gunmetal #293241 ΔE 0.035
- Dark Blue Grey #1F3B4D ΔE 0.036
- Midnight Green #073B4C ΔE 0.038
- Pakistan Green #283618 ΔE 0.049
- Space Cadet #2B2D42 ΔE 0.051
- Charcoal Grey #3C4142 ΔE 0.052
- Charcoal #264653 ΔE 0.057
Use #213938 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.