#04DAEA
Closest named color: Aqua Blue (#02D8E9). oklch(81% 0.138 204.2), rgb(4, 218, 234).
Aa
Black text reads best on this color (12.22:1).
About this color
#04DAEA is a light, moderately saturated teal or cyan. In OKLCH its lightness is 81%, its chroma 0.138 and its hue 204°. Its hue sits on the cool side of the wheel. The nearest named color is Aqua Blue (#02D8E9), ΔE 0.006 away. Black text reads best on it, at 12.22:1.
| Hue family | Teals and cyans |
| Lightness | light (81%) |
| Chroma | moderately saturated (0.138) |
| Temperature | cool |
| Nearest name | Aqua Blue (#02D8E9) |
| Black text | 12.22:1 |
| White text | 1.71:1 |
Values
| HEX | #04DAEA |
| RGB | rgb(4, 218, 234) |
| HSL | hsl(184, 97%, 47%) |
| OKLCH | oklch(81% 0.138 204.2) |
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 #04DAEA | 1.71:1 | Fails | Lc -34.0 | Non-text elements, placeholder text |
| Black text on #04DAEA | 12.22:1 | AAA | Lc 73.6 | Content text, not long reading |
| #04DAEA text on white | 1.71:1 | Fails | Lc 30.3 | Non-text elements, placeholder text |
| #04DAEA text on black | 12.22:1 | AAA | Lc -72.5 | 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
#E8F9FB
oklch(97% 0.018 205.3)
-
Step 100
100
#CCF2F6
oklch(93.5% 0.04 204.3)
-
Step 200
200
#9BE8F1
oklch(88.4% 0.077 205.2)
-
Step 300
300 (this color)
#04DAEA
oklch(81% 0.138 204.2)
-
Step 400
400
#00B6C3
oklch(70.8% 0.121 203.9)
-
Step 500
500
#009CA8
oklch(63.2% 0.108 204.4)
-
Step 600
600
#00838D
oklch(55.6% 0.095 204.2)
-
Step 700
700
#006E77
oklch(49.1% 0.084 204.7)
-
Step 800
800
#005A61
oklch(42.6% 0.073 204)
-
Step 900
900
#004B51
oklch(37.6% 0.064 204)
-
Step 950
950
#002D31
oklch(27.1% 0.046 204.1)
#04DAEA 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) | #C7D0EB | 0.137 |
| Deuteranopia (no green cones) | #ADBDEB | 0.126 |
| Tritanopia (no blue cones) | #00E4DF | 0.036 |
| Achromatopsia (no color) | #C5C5C5 | 0.138 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #04DAEA
#04DAEA
oklch(81% 0.138 204.2)
- #FFA59F
#FFA59F
oklch(81% 0.108 23.9)
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 #04DAEA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Aqua Blue #02D8E9 ΔE 0.006
- Medium Turquoise #48D1CC ΔE 0.042
- Dark Turquoise #00CED1 ΔE 0.043
- Turquoise #40E0D0 ΔE 0.047
- Vivid Sky Blue #4CC9F0 ΔE 0.052
- Bright Sky Blue #02CCFE ΔE 0.055
- Sky Blue #87CEEB ΔE 0.069
- Robin's Egg #6DEDFD ΔE 0.073
Use #04DAEA 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.