#04C2EA
Closest named color: Vivid Sky Blue (#4CC9F0). oklch(75.3% 0.136 219.8), rgb(4, 194, 234).
Aa
Black text reads best on this color (9.90:1).
About this color
#04C2EA is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 75%, its chroma 0.136 and its hue 220°. Its hue sits on the cool side of the wheel. The nearest named color is Vivid Sky Blue (#4CC9F0), ΔE 0.034 away. Black text reads best on it, at 9.90:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (75%) |
| Chroma | moderately saturated (0.136) |
| Temperature | cool |
| Nearest name | Vivid Sky Blue (#4CC9F0) |
| Black text | 9.90:1 |
| White text | 2.11:1 |
Values
| HEX | #04C2EA |
| RGB | rgb(4, 194, 234) |
| HSL | hsl(190, 97%, 47%) |
| OKLCH | oklch(75.3% 0.136 219.8) |
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 #04C2EA | 2.11:1 | Fails | Lc -45.5 | Large or bold text, headings |
| Black text on #04C2EA | 9.90:1 | AAA | Lc 63.1 | Content text, not long reading |
| #04C2EA text on white | 2.11:1 | Fails | Lc 40.9 | Non-text elements, placeholder text |
| #04C2EA text on black | 9.90:1 | AAA | Lc -61.4 | 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 400.
-
Step 50
50
#EEF7FB
oklch(97.1% 0.011 226)
-
Step 100
100
#D9EEF5
oklch(93.6% 0.024 219.7)
-
Step 200
200
#B7E1EF
oklch(88.4% 0.048 220.1)
-
Step 300
300
#7FCEE7
oklch(80.9% 0.085 220.2)
-
Step 400
400 (this color)
#04C2EA
oklch(75.3% 0.136 219.8)
-
Step 500
500
#0099B9
oklch(63.1% 0.115 219.7)
-
Step 600
600
#00809C
oklch(55.5% 0.101 220.3)
-
Step 700
700
#006C83
oklch(49.1% 0.089 219.3)
-
Step 800
800
#00586C
oklch(42.6% 0.078 220.2)
-
Step 900
900
#004A5B
oklch(37.8% 0.069 219.8)
-
Step 950
950
#002C37
oklch(27.1% 0.049 219.4)
#04C2EA 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) | #AABDEC | 0.114 |
| Deuteranopia (no green cones) | #90AAEA | 0.101 |
| Tritanopia (no blue cones) | #00CFCF | 0.062 |
| Achromatopsia (no color) | #B2B2B2 | 0.137 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #04C2EA
#04C2EA
oklch(75.3% 0.136 219.8)
- #F78F6A
#F78F6A
oklch(75.3% 0.136 40.2)
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 #04C2EA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Vivid Sky Blue #4CC9F0 ΔE 0.034
- Deep Sky Blue #00BFFF ΔE 0.034
- Bright Sky Blue #02CCFE ΔE 0.035
- Dark Turquoise #00CED1 ΔE 0.057
- Aqua Blue #02D8E9 ΔE 0.063
- Turquoise Blue #06B1C4 ΔE 0.065
- Lightblue #7BC8F6 ΔE 0.068
- Medium Turquoise #48D1CC ΔE 0.073
Use #04C2EA 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.