#204E43
Closest named color: Dark Blue Green (#005249). oklch(38.8% 0.054 175.4), rgb(32, 78, 67).
Aa
White text reads best on this color (9.40:1).
About this color
#204E43 is a dark, muted teal or cyan. In OKLCH its lightness is 39%, its chroma 0.054 and its hue 175°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Blue Green (#005249), ΔE 0.019 away. White text reads best on it, at 9.40:1.
| Hue family | Teals and cyans |
| Lightness | dark (39%) |
| Chroma | muted (0.054) |
| Temperature | cool |
| Nearest name | Dark Blue Green (#005249) |
| Black text | 2.23:1 |
| White text | 9.40:1 |
Values
| HEX | #204E43 |
| RGB | rgb(32, 78, 67) |
| HSL | hsl(166, 42%, 22%) |
| OKLCH | oklch(38.8% 0.054 175.4) |
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 #204E43 | 9.40:1 | AAA | Lc -95.9 | Preferred for body text |
| Black text on #204E43 | 2.23:1 | Fails | Lc 12.4 | Not readable |
| #204E43 text on white | 9.40:1 | AAA | Lc 91.6 | Preferred for body text |
| #204E43 text on black | 2.23:1 | Fails | Lc -10.8 | 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
#F2F7F5
oklch(97.2% 0.006 170.4)
-
Step 100
100
#E2EDE9
oklch(93.7% 0.013 172.4)
-
Step 200
200
#CBDED8
oklch(88.5% 0.022 174.9)
-
Step 300
300
#A6CABF
oklch(81% 0.041 174.7)
-
Step 400
400
#74AE9E
oklch(70.6% 0.065 175.1)
-
Step 500
500
#4C9A87
oklch(63.1% 0.083 175.5)
-
Step 600
600
#298471
oklch(55.5% 0.09 176)
-
Step 700
700
#1A705E
oklch(49.1% 0.084 175.1)
-
Step 800
800
#195B4D
oklch(42.6% 0.069 175.7)
-
Step 900
900 (this color)
#204E43
oklch(38.8% 0.054 175.4)
-
Step 950
950
#122C26
oklch(27% 0.034 176.7)
#204E43 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) | #4B4943 | 0.057 |
| Deuteranopia (no green cones) | #444444 | 0.054 |
| Tritanopia (no blue cones) | #074F4B | 0.017 |
| Achromatopsia (no color) | #464646 | 0.054 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #204E43
#204E43
oklch(38.8% 0.054 175.4)
- #5C3846
#5C3846
oklch(38.8% 0.055 355)
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 #204E43, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Green #005249 ΔE 0.019
- Dark Teal #014D4E ΔE 0.025
- Dark Slate Gray #2F4F4F ΔE 0.027
- Deep Teal #00555A ΔE 0.038
- Charcoal #264653 ΔE 0.045
- Evergreen #05472A ΔE 0.049
- Charcoal Grey #3C4142 ΔE 0.052
- Dark Grey Blue #29465B ΔE 0.057
Use #204E43 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.