#4BD9E1
Closest named color: Aqua Blue (#02D8E9). oklch(81.4% 0.119 200.5), rgb(75, 217, 225).
Aa
Black text reads best on this color (12.31:1).
About this color
#4BD9E1 is a light, moderately saturated teal or cyan. In OKLCH its lightness is 81%, its chroma 0.119 and its hue 201°. Its hue sits on the cool side of the wheel. The nearest named color is Aqua Blue (#02D8E9), ΔE 0.022 away. Black text reads best on it, at 12.31:1.
| Hue family | Teals and cyans |
| Lightness | light (81%) |
| Chroma | moderately saturated (0.119) |
| Temperature | cool |
| Nearest name | Aqua Blue (#02D8E9) |
| Black text | 12.31:1 |
| White text | 1.70:1 |
Values
| HEX | #4BD9E1 |
| RGB | rgb(75, 217, 225) |
| HSL | hsl(183, 71%, 59%) |
| OKLCH | oklch(81.4% 0.119 200.5) |
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 #4BD9E1 | 1.70:1 | Fails | Lc -34.0 | Non-text elements, placeholder text |
| Black text on #4BD9E1 | 12.31:1 | AAA | Lc 73.6 | Content text, not long reading |
| #4BD9E1 text on white | 1.70:1 | Fails | Lc 30.2 | Non-text elements, placeholder text |
| #4BD9E1 text on black | 12.31:1 | AAA | Lc -72.6 | 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 300.
-
Step 50
50
#EAF9FA
oklch(97.1% 0.016 201.7)
-
Step 100
100
#D0F1F3
oklch(93.5% 0.034 201.1)
-
Step 200
200
#A5E7EB
oklch(88.5% 0.066 200.8)
-
Step 300
300 (this color)
#4BD9E1
oklch(81.4% 0.119 200.5)
-
Step 400
400
#00B6BF
oklch(70.6% 0.12 201.1)
-
Step 500
500
#009CA3
oklch(63% 0.107 200.4)
-
Step 600
600
#00838A
oklch(55.5% 0.094 201.4)
-
Step 700
700
#006F74
oklch(49.2% 0.084 200.3)
-
Step 800
800
#005B5F
oklch(42.8% 0.073 200)
-
Step 900
900
#004B4F
oklch(37.5% 0.064 200.9)
-
Step 950
950
#002D2F
oklch(27% 0.046 199.4)
#4BD9E1 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) | #C9D0E2 | 0.120 |
| Deuteranopia (no green cones) | #B3BFE2 | 0.112 |
| Tritanopia (no blue cones) | #00E1DB | 0.031 |
| Achromatopsia (no color) | #C6C6C6 | 0.120 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4BD9E1
#4BD9E1
oklch(81.4% 0.119 200.5)
- #FFA7A5
#FFA7A5
oklch(81.4% 0.105 21)
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 #4BD9E1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Aqua Blue #02D8E9 ΔE 0.022
- Medium Turquoise #48D1CC ΔE 0.033
- Turquoise #40E0D0 ΔE 0.036
- Dark Turquoise #00CED1 ΔE 0.044
- Vivid Sky Blue #4CC9F0 ΔE 0.056
- Sky Blue #87CEEB ΔE 0.057
- Seafoam Blue #78D1B6 ΔE 0.060
- Bright Sky Blue #02CCFE ΔE 0.067
Use #4BD9E1 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.