#00EFCC
Closest named color: Aqua Marine (#2EE8BB). oklch(85.1% 0.158 176.9), rgb(0, 239, 204).
Aa
Black text reads best on this color (14.21:1).
About this color
#00EFCC is a light, vivid teal or cyan. In OKLCH its lightness is 85%, its chroma 0.158 and its hue 177°. Its hue sits on the cool side of the wheel. The nearest named color is Aqua Marine (#2EE8BB), ΔE 0.024 away. Black text reads best on it, at 14.21:1.
| Hue family | Teals and cyans |
| Lightness | light (85%) |
| Chroma | vivid (0.158) |
| Temperature | cool |
| Nearest name | Aqua Marine (#2EE8BB) |
| Black text | 14.21:1 |
| White text | 1.47:1 |
Values
| HEX | #00EFCC |
| RGB | rgb(0, 239, 204) |
| HSL | hsl(171, 100%, 47%) |
| OKLCH | oklch(85.1% 0.158 176.9) |
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 #00EFCC | 1.47:1 | Fails | Lc -24.8 | Dividers and decoration only |
| Black text on #00EFCC | 14.21:1 | AAA | Lc 81.9 | Fine for body text |
| #00EFCC text on white | 1.47:1 | Fails | Lc 21.8 | Dividers and decoration only |
| #00EFCC text on black | 14.21:1 | AAA | Lc -81.5 | 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
#E3FCF5
oklch(97.1% 0.028 177.1)
-
Step 100
100
#C1F7E9
oklch(93.5% 0.058 177.3)
-
Step 200
200 (this color)
#00EFCC
oklch(85.1% 0.158 176.9)
-
Step 300
300
#00DFBF
oklch(80.8% 0.15 177.3)
-
Step 400
400
#00BB9F
oklch(70.8% 0.132 176.8)
-
Step 500
500
#00A088
oklch(63.1% 0.117 177)
-
Step 600
600
#008772
oklch(55.7% 0.104 176.6)
-
Step 700
700
#007160
oklch(49.1% 0.091 177.4)
-
Step 800
800
#005D4E
oklch(42.8% 0.079 176.7)
-
Step 900
900
#004D41
oklch(37.6% 0.069 177.7)
-
Step 950
950
#002E26
oklch(26.9% 0.05 177.5)
#00EFCC 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) | #E5DFCA | 0.165 |
| Deuteranopia (no green cones) | #CCCDCF | 0.158 |
| Tritanopia (no blue cones) | #00F3E5 | 0.034 |
| Achromatopsia (no color) | #D4D4D4 | 0.159 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #00EFCC
#00EFCC
oklch(85.1% 0.158 176.9)
- #FFB6CF
#FFB6CF
oklch(85.1% 0.09 356.9)
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 #00EFCC, closest first.
No curated palette has a color within ΔE 0.04 of #00EFCC.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Aqua Marine #2EE8BB ΔE 0.024
- Bright Teal #01F9C6 ΔE 0.032
- Bright Aqua #0BF9EA ΔE 0.044
- Turquoise #40E0D0 ΔE 0.045
- Light Turquoise #7EF4CC ΔE 0.054
- Greenish Turquoise #00FBB0 ΔE 0.058
- Greenish Cyan #2AFEB7 ΔE 0.058
- Bright Turquoise #0FFEF9 ΔE 0.065
Use #00EFCC 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.