#04E2FC
Closest named color: Aqua Blue (#02D8E9). oklch(83.6% 0.144 209.5), rgb(4, 226, 252).
Aa
Black text reads best on this color (13.28:1).
About this color
#04E2FC is a light, vivid teal or cyan. In OKLCH its lightness is 84%, its chroma 0.144 and its hue 209°. Its hue sits on the cool side of the wheel. The nearest named color is Aqua Blue (#02D8E9), ΔE 0.034 away. Black text reads best on it, at 13.28:1.
| Hue family | Teals and cyans |
| Lightness | light (84%) |
| Chroma | vivid (0.144) |
| Temperature | cool |
| Nearest name | Aqua Blue (#02D8E9) |
| Black text | 13.28:1 |
| White text | 1.58:1 |
Values
| HEX | #04E2FC |
| RGB | rgb(4, 226, 252) |
| HSL | hsl(186, 98%, 50%) |
| OKLCH | oklch(83.6% 0.144 209.5) |
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 #04E2FC | 1.58:1 | Fails | Lc -29.0 | Dividers and decoration only |
| Black text on #04E2FC | 13.28:1 | AAA | Lc 78.1 | Fine for body text |
| #04E2FC text on white | 1.58:1 | Fails | Lc 25.7 | Dividers and decoration only |
| #04E2FC text on black | 13.28:1 | AAA | Lc -77.4 | 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
#E8F9FD
oklch(97.1% 0.019 213.4)
-
Step 100
100
#CBF2F9
oklch(93.6% 0.041 209.7)
-
Step 200
200
#99E8F6
oklch(88.5% 0.08 209.9)
-
Step 300
300 (this color)
#04E2FC
oklch(83.6% 0.144 209.5)
-
Step 400
400
#00B5CA
oklch(70.8% 0.122 209.4)
-
Step 500
500
#009BAD
oklch(63.1% 0.109 209.2)
-
Step 600
600
#008292
oklch(55.6% 0.096 209.8)
-
Step 700
700
#006D7B
oklch(49% 0.085 210.2)
-
Step 800
800
#005A65
oklch(42.8% 0.074 209.1)
-
Step 900
900
#004B54
oklch(37.8% 0.065 208.5)
-
Step 950
950
#002C33
oklch(26.9% 0.047 211.1)
#04E2FC 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) | #CCD9FE | 0.137 |
| Deuteranopia (no green cones) | #B0C5FC | 0.124 |
| Tritanopia (no blue cones) | #00EEEA | 0.048 |
| Achromatopsia (no color) | #CECECE | 0.145 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #04E2FC
#04E2FC
oklch(83.6% 0.144 209.5)
- #FFB3A7
#FFB3A7
oklch(83.6% 0.091 29.1)
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 #04E2FC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Aqua Blue #02D8E9 ΔE 0.034
- Robin's Egg #6DEDFD ΔE 0.053
- Bright Light Blue #26F7FD ΔE 0.059
- Turquoise #40E0D0 ΔE 0.061
- Bright Sky Blue #02CCFE ΔE 0.063
- Vivid Sky Blue #4CC9F0 ΔE 0.065
- Medium Turquoise #48D1CC ΔE 0.069
- Dark Turquoise #00CED1 ΔE 0.072
Use #04E2FC 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.