#04ECFF
Closest named color: Bright Light Blue (#26F7FD). oklch(86.1% 0.147 205.2), rgb(4, 236, 255).
Aa
Black text reads best on this color (14.44:1).
About this color
#04ECFF is a light, vivid teal or cyan. In OKLCH its lightness is 86%, its chroma 0.147 and its hue 205°. Its hue sits on the cool side of the wheel. The nearest named color is Bright Light Blue (#26F7FD), ΔE 0.033 away. Black text reads best on it, at 14.44:1.
| Hue family | Teals and cyans |
| Lightness | light (86%) |
| Chroma | vivid (0.147) |
| Temperature | cool |
| Nearest name | Bright Light Blue (#26F7FD) |
| Black text | 14.44:1 |
| White text | 1.45:1 |
Values
| HEX | #04ECFF |
| RGB | rgb(4, 236, 255) |
| HSL | hsl(185, 100%, 51%) |
| OKLCH | oklch(86.1% 0.147 205.2) |
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 #04ECFF | 1.45:1 | Fails | Lc -23.8 | Dividers and decoration only |
| Black text on #04ECFF | 14.44:1 | AAA | Lc 82.8 | Fine for body text |
| #04ECFF text on white | 1.45:1 | Fails | Lc 20.9 | Dividers and decoration only |
| #04ECFF text on black | 14.44:1 | AAA | Lc -82.5 | 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 200.
-
Step 50
50
#E3FBFE
oklch(97.2% 0.025 205.8)
-
Step 100
100
#C0F5FB
oklch(93.6% 0.054 204.9)
-
Step 200
200 (this color)
#04ECFF
oklch(86.1% 0.147 205.2)
-
Step 300
300
#00D9EB
oklch(80.8% 0.138 205.4)
-
Step 400
400
#00B6C4
oklch(70.8% 0.121 204.6)
-
Step 500
500
#009CA9
oklch(63.2% 0.108 205.2)
-
Step 600
600
#00838E
oklch(55.7% 0.095 205.2)
-
Step 700
700
#006E77
oklch(49.1% 0.084 204.7)
-
Step 800
800
#005A62
oklch(42.7% 0.073 205.3)
-
Step 900
900
#004B52
oklch(37.7% 0.064 205.5)
-
Step 950
950
#002D31
oklch(27.1% 0.046 204.1)
#04ECFF 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) | #D7E2FF | 0.144 |
| Deuteranopia (no green cones) | #BBCDFF | 0.133 |
| Tritanopia (no blue cones) | #00F7F2 | 0.040 |
| Achromatopsia (no color) | #D6D6D6 | 0.148 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #04ECFF
#04ECFF
oklch(86.1% 0.147 205.2)
- #FFBFB8
#FFBFB8
oklch(86.1% 0.075 25.8)
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 #04ECFF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bright Light Blue #26F7FD ΔE 0.033
- Robin's Egg #6DEDFD ΔE 0.037
- Bright Cyan #41FDFE ΔE 0.052
- Cyan #00FFFF ΔE 0.053
- Bright Turquoise #0FFEF9 ΔE 0.054
- Bright Aqua #0BF9EA ΔE 0.054
- Aqua Blue #02D8E9 ΔE 0.057
- Robin Egg Blue #8AF1FE ΔE 0.063
Use #04ECFF 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.