#04E3CC
Closest named color: Turquoise (#40E0D0). oklch(82.2% 0.147 182.1), rgb(4, 227, 204).
Aa
Black text reads best on this color (12.86:1).
About this color
#04E3CC is a light, vivid teal or cyan. In OKLCH its lightness is 82%, its chroma 0.147 and its hue 182°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise (#40E0D0), ΔE 0.018 away. Black text reads best on it, at 12.86:1.
| Hue family | Teals and cyans |
| Lightness | light (82%) |
| Chroma | vivid (0.147) |
| Temperature | cool |
| Nearest name | Turquoise (#40E0D0) |
| Black text | 12.86:1 |
| White text | 1.63:1 |
Values
| HEX | #04E3CC |
| RGB | rgb(4, 227, 204) |
| HSL | hsl(174, 97%, 45%) |
| OKLCH | oklch(82.2% 0.147 182.1) |
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 #04E3CC | 1.63:1 | Fails | Lc -31.0 | Non-text elements, placeholder text |
| Black text on #04E3CC | 12.86:1 | AAA | Lc 76.3 | Fine for body text |
| #04E3CC text on white | 1.63:1 | Fails | Lc 27.5 | Dividers and decoration only |
| #04E3CC text on black | 12.86:1 | AAA | Lc -75.5 | 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
#E8FAF6
oklch(97.1% 0.02 181.1)
-
Step 100
100
#CCF4EC
oklch(93.7% 0.043 181.9)
-
Step 200
200
#9BEBDD
oklch(88.4% 0.081 182.2)
-
Step 300
300 (this color)
#04E3CC
oklch(82.2% 0.147 182.1)
-
Step 400
400
#00BAA7
oklch(70.8% 0.127 182.2)
-
Step 500
500
#009F8F
oklch(63.1% 0.113 182.5)
-
Step 600
600
#008678
oklch(55.6% 0.1 182.2)
-
Step 700
700
#007164
oklch(49.2% 0.089 181.2)
-
Step 800
800
#005C52
oklch(42.6% 0.076 182.2)
-
Step 900
900
#004D44
oklch(37.7% 0.068 181.7)
-
Step 950
950
#002E28
oklch(27% 0.049 181.5)
#04E3CC 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) | #D8D5CB | 0.156 |
| Deuteranopia (no green cones) | #BFC3CE | 0.147 |
| Tritanopia (no blue cones) | #00E8DC | 0.023 |
| Achromatopsia (no color) | #CACACA | 0.148 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #04E3CC
#04E3CC
oklch(82.2% 0.147 182.1)
- #FFA7BF
#FFA7BF
oklch(82.1% 0.107 2)
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 #04E3CC, closest first.
No curated palette has a color within ΔE 0.04 of #04E3CC.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise #40E0D0 ΔE 0.018
- Aqua Marine #2EE8BB ΔE 0.032
- Medium Turquoise #48D1CC ΔE 0.051
- Aqua Blue #02D8E9 ΔE 0.059
- Seafoam Blue #78D1B6 ΔE 0.061
- Emerald #06D6A0 ΔE 0.062
- Dark Turquoise #00CED1 ΔE 0.063
- Bright Aqua #0BF9EA ΔE 0.064
Use #04E3CC 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.