#04E2EF
Closest named color: Aqua Blue (#02D8E9). oklch(83.1% 0.141 202.2), rgb(4, 226, 239).
Aa
Black text reads best on this color (13.13:1).
About this color
#04E2EF is a light, vivid teal or cyan. In OKLCH its lightness is 83%, its chroma 0.141 and its hue 202°. Its hue sits on the cool side of the wheel. The nearest named color is Aqua Blue (#02D8E9), ΔE 0.027 away. Black text reads best on it, at 13.13:1.
| Hue family | Teals and cyans |
| Lightness | light (83%) |
| Chroma | vivid (0.141) |
| Temperature | cool |
| Nearest name | Aqua Blue (#02D8E9) |
| Black text | 13.13:1 |
| White text | 1.59:1 |
Values
| HEX | #04E2EF |
| RGB | rgb(4, 226, 239) |
| HSL | hsl(183, 97%, 48%) |
| OKLCH | oklch(83.1% 0.141 202.2) |
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 #04E2EF | 1.59:1 | Fails | Lc -29.8 | Dividers and decoration only |
| Black text on #04E2EF | 13.13:1 | AAA | Lc 77.4 | Fine for body text |
| #04E2EF text on white | 1.59:1 | Fails | Lc 26.3 | Dividers and decoration only |
| #04E2EF text on black | 13.13:1 | AAA | Lc -76.7 | Fine for body text |
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
#E8FAFB
oklch(97.2% 0.019 200.9)
-
Step 100
100
#CBF3F6
oklch(93.7% 0.041 202.1)
-
Step 200
200
#99E9EF
oklch(88.5% 0.079 201.9)
-
Step 300
300 (this color)
#04E2EF
oklch(83.1% 0.141 202.2)
-
Step 400
400
#00B6C1
oklch(70.7% 0.12 202.5)
-
Step 500
500
#009CA5
oklch(63.1% 0.107 202)
-
Step 600
600
#00838B
oklch(55.5% 0.095 202.3)
-
Step 700
700
#006E75
oklch(49% 0.083 202.5)
-
Step 800
800
#005A60
oklch(42.6% 0.073 202.7)
-
Step 900
900
#004B50
oklch(37.6% 0.064 202.5)
-
Step 950
950
#002D30
oklch(27% 0.046 201.8)
#04E2EF 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) | #CFD8F0 | 0.141 |
| Deuteranopia (no green cones) | #B4C4F0 | 0.131 |
| Tritanopia (no blue cones) | #00ECE6 | 0.034 |
| Achromatopsia (no color) | #CCCCCC | 0.142 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #04E2EF
#04E2EF
oklch(83.1% 0.141 202.2)
- #FFB0AC
#FFB0AC
oklch(83.2% 0.093 22.5)
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 #04E2EF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Aqua Blue #02D8E9 ΔE 0.027
- Turquoise #40E0D0 ΔE 0.043
- Robin's Egg #6DEDFD ΔE 0.056
- Medium Turquoise #48D1CC ΔE 0.056
- Bright Light Blue #26F7FD ΔE 0.058
- Dark Turquoise #00CED1 ΔE 0.061
- Bright Aqua #0BF9EA ΔE 0.067
- Vivid Sky Blue #4CC9F0 ΔE 0.070
Use #04E2EF 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.