#04C2EF
Closest named color: Deep Sky Blue (#00BFFF). oklch(75.5% 0.14 222.5), rgb(4, 194, 239).
Aa
Black text reads best on this color (9.96:1).
About this color
#04C2EF is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 76%, its chroma 0.140 and its hue 222°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sky Blue (#00BFFF), ΔE 0.027 away. Black text reads best on it, at 9.96:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (76%) |
| Chroma | moderately saturated (0.140) |
| Temperature | cool |
| Nearest name | Deep Sky Blue (#00BFFF) |
| Black text | 9.96:1 |
| White text | 2.10:1 |
Values
| HEX | #04C2EF |
| RGB | rgb(4, 194, 239) |
| HSL | hsl(191, 97%, 48%) |
| OKLCH | oklch(75.5% 0.14 222.5) |
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 #04C2EF | 2.10:1 | Fails | Lc -45.2 | Large or bold text, headings |
| Black text on #04C2EF | 9.96:1 | AAA | Lc 63.4 | Content text, not long reading |
| #04C2EF text on white | 2.10:1 | Fails | Lc 40.6 | Non-text elements, placeholder text |
| #04C2EF text on black | 9.96:1 | AAA | Lc -61.7 | 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
#D9EEF6
oklch(93.6% 0.025 222.6)
-
Step 200
200
#B7E1F1
oklch(88.5% 0.049 223)
-
Step 300
300
#7ECEE9
oklch(81% 0.087 221.6)
-
Step 400
400 (this color)
#04C2EF
oklch(75.5% 0.14 222.5)
-
Step 500
500
#0098BC
oklch(63% 0.117 222.5)
-
Step 600
600
#00809F
oklch(55.6% 0.103 222.6)
-
Step 700
700
#006B86
oklch(49% 0.091 223.1)
-
Step 800
800
#00586E
oklch(42.7% 0.079 222.3)
-
Step 900
900
#00495C
oklch(37.6% 0.07 222.6)
-
Step 950
950
#002C38
oklch(27.2% 0.05 221.4)
#04C2EF 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) | #A8BDF1 | 0.111 |
| Deuteranopia (no green cones) | #8DAAEF | 0.098 |
| Tritanopia (no blue cones) | #00D0D1 | 0.068 |
| Achromatopsia (no color) | #B3B3B3 | 0.140 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #04C2EF
#04C2EF
oklch(75.5% 0.14 222.5)
- #F89065
#F89065
oklch(75.5% 0.139 42.8)
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 #04C2EF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sky Blue #00BFFF ΔE 0.027
- Bright Sky Blue #02CCFE ΔE 0.031
- Vivid Sky Blue #4CC9F0 ΔE 0.033
- Dark Turquoise #00CED1 ΔE 0.063
- Aqua Blue #02D8E9 ΔE 0.065
- Lightblue #7BC8F6 ΔE 0.066
- Turquoise Blue #06B1C4 ΔE 0.070
- Sky #82CAFC ΔE 0.076
Use #04C2EF 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.