#213933
Closest named color: Onyx (#343A40). oklch(32.3% 0.032 176.6), rgb(33, 57, 51).
Aa
White text reads best on this color (12.36:1).
About this color
#213933 is a dark, muted teal or cyan. In OKLCH its lightness is 32%, its chroma 0.032 and its hue 177°. Its hue sits on the cool side of the wheel. The nearest named color is Onyx (#343A40), ΔE 0.038 away. White text reads best on it, at 12.36:1.
| Hue family | Teals and cyans |
| Lightness | dark (32%) |
| Chroma | muted (0.032) |
| Temperature | cool |
| Nearest name | Onyx (#343A40) |
| Black text | 1.69:1 |
| White text | 12.36:1 |
Values
| HEX | #213933 |
| RGB | rgb(33, 57, 51) |
| HSL | hsl(165, 27%, 18%) |
| OKLCH | oklch(32.3% 0.032 176.6) |
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 #213933 | 12.36:1 | AAA | Lc -101.6 | Preferred for body text |
| Black text on #213933 | 1.69:1 | Fails | Lc 0.0 | Not readable |
| #213933 text on white | 12.36:1 | AAA | Lc 98.1 | Preferred for body text |
| #213933 text on black | 1.69:1 | 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
#F2F7F5
oklch(97.2% 0.006 170.4)
-
Step 100
100
#E3ECE9
oklch(93.5% 0.01 174.3)
-
Step 200
200
#CBDED9
oklch(88.5% 0.021 178.3)
-
Step 300
300
#A8C9C0
oklch(80.9% 0.038 177)
-
Step 400
400
#77AD9F
oklch(70.6% 0.061 176.5)
-
Step 500
500
#519988
oklch(63.1% 0.078 176.5)
-
Step 600
600
#318372
oklch(55.5% 0.084 176.9)
-
Step 700
700
#226F5F
oklch(49.1% 0.079 176.2)
-
Step 800
800
#1F5B4E
oklch(42.8% 0.065 176.1)
-
Step 900
900
#204A41
oklch(37.6% 0.05 177.5)
-
Step 950
950 (this color)
#213933
oklch(32.3% 0.032 176.6)
#213933 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) | #373633 | 0.034 |
| Deuteranopia (no green cones) | #333333 | 0.032 |
| Tritanopia (no blue cones) | #1A3A37 | 0.009 |
| Achromatopsia (no color) | #343434 | 0.032 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #213933
#213933
oklch(32.3% 0.032 176.6)
- #412D34
#412D34
oklch(32.3% 0.031 356.2)
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 #213933, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.038
- Pakistan Green #283618 ΔE 0.040
- Gunmetal #293241 ΔE 0.042
- Dark Blue Grey #1F3B4D ΔE 0.045
- Midnight Green #073B4C ΔE 0.045
- Charcoal Grey #3C4142 ΔE 0.055
- Space Cadet #2B2D42 ΔE 0.058
- Evergreen #05472A ΔE 0.058
Use #213933 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.