#00CDC4
Closest named color: Dark Turquoise (#00CED1). oklch(76.5% 0.132 189.2), rgb(0, 205, 196).
Aa
Black text reads best on this color (10.52:1).
About this color
#00CDC4 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 77%, its chroma 0.132 and its hue 189°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Turquoise (#00CED1), ΔE 0.019 away. Black text reads best on it, at 10.52:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (77%) |
| Chroma | moderately saturated (0.132) |
| Temperature | cool |
| Nearest name | Dark Turquoise (#00CED1) |
| Black text | 10.52:1 |
| White text | 1.99:1 |
Values
| HEX | #00CDC4 |
| RGB | rgb(0, 205, 196) |
| HSL | hsl(177, 100%, 40%) |
| OKLCH | oklch(76.5% 0.132 189.2) |
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 #00CDC4 | 1.99:1 | Fails | Lc -42.3 | Non-text elements, placeholder text |
| Black text on #00CDC4 | 10.52:1 | AAA | Lc 66.0 | Content text, not long reading |
| #00CDC4 text on white | 1.99:1 | Fails | Lc 37.9 | Non-text elements, placeholder text |
| #00CDC4 text on black | 10.52:1 | AAA | Lc -64.5 | Content text, not long reading |
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 300.
-
Step 50
50
#E9FAF8
oklch(97.2% 0.018 188.4)
-
Step 100
100
#CEF3EF
oklch(93.7% 0.039 188.5)
-
Step 200
200
#A0E9E3
oklch(88.4% 0.073 189.5)
-
Step 300
300 (this color)
#00CDC4
oklch(76.5% 0.132 189.2)
-
Step 400
400
#00B8B0
oklch(70.6% 0.122 189.3)
-
Step 500
500
#009E97
oklch(63.1% 0.109 189.2)
-
Step 600
600
#00857F
oklch(55.6% 0.096 189.2)
-
Step 700
700
#00706B
oklch(49.2% 0.085 189.4)
-
Step 800
800
#005C57
oklch(42.8% 0.074 188.4)
-
Step 900
900
#004C49
oklch(37.6% 0.065 190.2)
-
Step 950
950
#002E2B
oklch(27.1% 0.047 188)
#00CDC4 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) | #C0C1C4 | 0.140 |
| Deuteranopia (no green cones) | #AAB0C5 | 0.133 |
| Tritanopia (no blue cones) | #00D3CA | 0.017 |
| Achromatopsia (no color) | #B8B8B8 | 0.134 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #00CDC4
#00CDC4
oklch(76.5% 0.132 189.2)
- #FA8DA1
#FA8DA1
oklch(76.5% 0.133 9)
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 #00CDC4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Turquoise #00CED1 ΔE 0.019
- Medium Turquoise #48D1CC ΔE 0.028
- Medium Aquamarine #66CDAA ΔE 0.050
- Topaz #13BBAF ΔE 0.052
- Aqua Blue #02D8E9 ΔE 0.055
- Turquoise #40E0D0 ΔE 0.058
- Seafoam Blue #78D1B6 ΔE 0.059
- Emerald #06D6A0 ΔE 0.064
Use #00CDC4 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.