#4ED9BB
Closest named color: Turquoise (#40E0D0). oklch(80.2% 0.127 175.8), rgb(78, 217, 187).
Aa
Black text reads best on this color (11.96:1).
About this color
#4ED9BB is a light, moderately saturated teal or cyan. In OKLCH its lightness is 80%, its chroma 0.127 and its hue 176°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise (#40E0D0), ΔE 0.029 away. Black text reads best on it, at 11.96:1.
| Hue family | Teals and cyans |
| Lightness | light (80%) |
| Chroma | moderately saturated (0.127) |
| Temperature | cool |
| Nearest name | Turquoise (#40E0D0) |
| Black text | 11.96:1 |
| White text | 1.75:1 |
Values
| HEX | #4ED9BB |
| RGB | rgb(78, 217, 187) |
| HSL | hsl(167, 65%, 58%) |
| OKLCH | oklch(80.2% 0.127 175.8) |
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 #4ED9BB | 1.75:1 | Fails | Lc -35.6 | Non-text elements, placeholder text |
| Black text on #4ED9BB | 11.96:1 | AAA | Lc 72.1 | Content text, not long reading |
| #4ED9BB text on white | 1.75:1 | Fails | Lc 31.7 | Non-text elements, placeholder text |
| #4ED9BB text on black | 11.96:1 | AAA | Lc -71.0 | 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
#EAF9F5
oklch(97% 0.017 178.3)
-
Step 100
100
#D1F2E9
oklch(93.5% 0.036 177.2)
-
Step 200
200
#A7E9D7
oklch(88.5% 0.071 175.8)
-
Step 300
300 (this color)
#4ED9BB
oklch(80.2% 0.127 175.8)
-
Step 400
400
#00BB9D
oklch(70.7% 0.133 175.7)
-
Step 500
500
#00A086
oklch(63% 0.118 175.6)
-
Step 600
600
#008771
oklch(55.7% 0.104 175.8)
-
Step 700
700
#00715E
oklch(49% 0.092 175.6)
-
Step 800
800
#005D4D
oklch(42.7% 0.08 175.6)
-
Step 900
900
#004D40
oklch(37.6% 0.07 176.4)
-
Step 950
950
#002E25
oklch(26.9% 0.05 175.6)
#4ED9BB 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) | #D1CCBA | 0.133 |
| Deuteranopia (no green cones) | #BDBDBD | 0.127 |
| Tritanopia (no blue cones) | #00DCD0 | 0.031 |
| Achromatopsia (no color) | #C3C3C3 | 0.128 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4ED9BB
#4ED9BB
oklch(80.2% 0.127 175.8)
- #FF9BC1
#FF9BC1
oklch(80.2% 0.127 356)
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 #4ED9BB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise #40E0D0 ΔE 0.029
- Seafoam Blue #78D1B6 ΔE 0.033
- Medium Aquamarine #66CDAA ΔE 0.034
- Medium Turquoise #48D1CC ΔE 0.038
- Aqua Marine #2EE8BB ΔE 0.043
- Emerald #06D6A0 ΔE 0.047
- Pale Teal #82CBB2 ΔE 0.049
- Dark Turquoise #00CED1 ΔE 0.056
Use #4ED9BB 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.