#204D59
Closest named color: Charcoal (#264653). oklch(39.4% 0.053 217.9), rgb(32, 77, 89).
Aa
White text reads best on this color (9.26:1).
About this color
#204D59 is a dark, muted teal or cyan. In OKLCH its lightness is 39%, its chroma 0.053 and its hue 218°. Its hue sits on the cool side of the wheel. The nearest named color is Charcoal (#264653), ΔE 0.022 away. White text reads best on it, at 9.26:1.
| Hue family | Teals and cyans |
| Lightness | dark (39%) |
| Chroma | muted (0.053) |
| Temperature | cool |
| Nearest name | Charcoal (#264653) |
| Black text | 2.26:1 |
| White text | 9.26:1 |
Values
| HEX | #204D59 |
| RGB | rgb(32, 77, 89) |
| HSL | hsl(193, 47%, 24%) |
| OKLCH | oklch(39.4% 0.053 217.9) |
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 #204D59 | 9.26:1 | AAA | Lc -95.5 | Preferred for body text |
| Black text on #204D59 | 2.26:1 | Fails | Lc 12.8 | Not readable |
| #204D59 text on white | 9.26:1 | AAA | Lc 91.2 | Preferred for body text |
| #204D59 text on black | 2.26:1 | Fails | Lc -11.1 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E2ECEF
oklch(93.6% 0.011 217.5)
-
Step 200
200
#CADDE3
oklch(88.5% 0.022 218.6)
-
Step 300
300
#A5C7D2
oklch(80.8% 0.04 219.4)
-
Step 400
400
#72ABBB
oklch(70.8% 0.064 217.3)
-
Step 500
500
#4995AA
oklch(63% 0.081 218.3)
-
Step 600
600
#257F96
oklch(55.5% 0.089 218.9)
-
Step 700
700
#156C7F
oklch(49.2% 0.082 216.8)
-
Step 800
800
#165868
oklch(42.8% 0.068 217.9)
-
Step 900
900 (this color)
#204D59
oklch(39.4% 0.053 217.9)
-
Step 950
950
#112A31
oklch(26.8% 0.033 218.4)
#204D59 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) | #454B5A | 0.046 |
| Deuteranopia (no green cones) | #3D4559 | 0.041 |
| Tritanopia (no blue cones) | #005151 | 0.028 |
| Achromatopsia (no color) | #474747 | 0.053 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #204D59
#204D59
oklch(39.4% 0.053 217.9)
- #5F3C31
#5F3C31
oklch(39.4% 0.053 38.2)
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 #204D59, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal #264653 ΔE 0.022
- Dark Slate Gray #2F4F4F ΔE 0.025
- Dark Grey Blue #29465B ΔE 0.025
- Dark Teal #014D4E ΔE 0.028
- Deep Teal #00555A ΔE 0.028
- Dark Blue Green #005249 ΔE 0.041
- Charcoal Grey #3C4142 ΔE 0.052
- Petrol #005F6A ΔE 0.056
Use #204D59 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.