#04CBDB
Closest named color: Dark Turquoise (#00CED1). oklch(76.8% 0.131 204.9), rgb(4, 203, 219).
Aa
Black text reads best on this color (10.57:1).
About this color
#04CBDB is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 77%, its chroma 0.131 and its hue 205°. 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 10.57:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (77%) |
| Chroma | moderately saturated (0.131) |
| Temperature | cool |
| Nearest name | Dark Turquoise (#00CED1) |
| Black text | 10.57:1 |
| White text | 1.98:1 |
Values
| HEX | #04CBDB |
| RGB | rgb(4, 203, 219) |
| HSL | hsl(184, 96%, 44%) |
| OKLCH | oklch(76.8% 0.131 204.9) |
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 #04CBDB | 1.98:1 | Fails | Lc -42.1 | Non-text elements, placeholder text |
| Black text on #04CBDB | 10.57:1 | AAA | Lc 66.2 | Content text, not long reading |
| #04CBDB text on white | 1.98:1 | Fails | Lc 37.7 | Non-text elements, placeholder text |
| #04CBDB text on black | 10.57:1 | AAA | Lc -64.7 | 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
#E9F9FB
oklch(97.1% 0.017 205.8)
-
Step 100
100
#CEF2F6
oklch(93.7% 0.038 204.7)
-
Step 200
200
#9FE8F0
oklch(88.6% 0.073 204.6)
-
Step 300
300 (this color)
#04CBDB
oklch(76.8% 0.131 204.9)
-
Step 400
400
#00B6C4
oklch(70.8% 0.121 204.6)
-
Step 500
500
#009CA8
oklch(63.2% 0.108 204.4)
-
Step 600
600
#00838E
oklch(55.7% 0.095 205.2)
-
Step 700
700
#006E77
oklch(49.1% 0.084 204.7)
-
Step 800
800
#005A62
oklch(42.7% 0.073 205.3)
-
Step 900
900
#004B52
oklch(37.7% 0.064 205.5)
-
Step 950
950
#002D31
oklch(27.1% 0.046 204.1)
#04CBDB 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) | #B9C2DC | 0.129 |
| Deuteranopia (no green cones) | #A0B0DB | 0.118 |
| Tritanopia (no blue cones) | #00D4D0 | 0.034 |
| Achromatopsia (no color) | #B8B8B8 | 0.132 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #04CBDB
#04CBDB
oklch(76.8% 0.131 204.9)
- #FC9189
#FC9189
oklch(76.8% 0.131 25.1)
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 #04CBDB, 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 0.037
- Aqua Blue #02D8E9 ΔE 0.037
- Vivid Sky Blue #4CC9F0 ΔE 0.042
- Bright Sky Blue #02CCFE ΔE 0.051
- Topaz #13BBAF ΔE 0.068
- Turquoise #40E0D0 ΔE 0.070
- Deep Sky Blue #00BFFF ΔE 0.071
Use #04CBDB 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.