#51ECCF
Closest named color: Aqua Marine (#2EE8BB). oklch(85.5% 0.136 177.9), rgb(81, 236, 207).
Aa
Black text reads best on this color (14.24:1).
About this color
#51ECCF is a light, moderately saturated teal or cyan. In OKLCH its lightness is 85%, its chroma 0.136 and its hue 178°. Its hue sits on the cool side of the wheel. The nearest named color is Aqua Marine (#2EE8BB), ΔE 0.034 away. Black text reads best on it, at 14.24:1.
| Hue family | Teals and cyans |
| Lightness | light (85%) |
| Chroma | moderately saturated (0.136) |
| Temperature | cool |
| Nearest name | Aqua Marine (#2EE8BB) |
| Black text | 14.24:1 |
| White text | 1.47:1 |
Values
| HEX | #51ECCF |
| RGB | rgb(81, 236, 207) |
| HSL | hsl(169, 80%, 62%) |
| OKLCH | oklch(85.5% 0.136 177.9) |
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 #51ECCF | 1.47:1 | Fails | Lc -25.0 | Dividers and decoration only |
| Black text on #51ECCF | 14.24:1 | AAA | Lc 81.7 | Fine for body text |
| #51ECCF text on white | 1.47:1 | Fails | Lc 22.0 | Dividers and decoration only |
| #51ECCF text on black | 14.24:1 | AAA | Lc -81.3 | 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
#E6FBF5
oklch(97.1% 0.023 176.9)
-
Step 100
100
#C7F6EA
oklch(93.7% 0.051 177.9)
-
Step 200
200 (this color)
#51ECCF
oklch(85.5% 0.136 177.9)
-
Step 300
300
#00DFC0
oklch(80.8% 0.149 177.8)
-
Step 400
400
#00BAA0
oklch(70.6% 0.13 177.9)
-
Step 500
500
#00A089
oklch(63.1% 0.116 177.6)
-
Step 600
600
#008673
oklch(55.5% 0.102 178.1)
-
Step 700
700
#007161
oklch(49.1% 0.09 178.4)
-
Step 800
800
#005D4F
oklch(42.8% 0.079 177.8)
-
Step 900
900
#004D41
oklch(37.6% 0.069 177.7)
-
Step 950
950
#002E26
oklch(26.9% 0.05 177.5)
#51ECCF 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) | #E3DECE | 0.143 |
| Deuteranopia (no green cones) | #CDCED1 | 0.136 |
| Tritanopia (no blue cones) | #00EFE3 | 0.029 |
| Achromatopsia (no color) | #D5D5D5 | 0.137 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51ECCF
#51ECCF
oklch(85.5% 0.136 177.9)
- #FFB8CF
#FFB8CF
oklch(85.5% 0.087 358)
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 #51ECCF, closest first.
No curated palette has a color within ΔE 0.04 of #51ECCF.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Aqua Marine #2EE8BB ΔE 0.034
- Turquoise #40E0D0 ΔE 0.037
- Light Turquoise #7EF4CC ΔE 0.040
- Bright Aqua #0BF9EA ΔE 0.042
- Bright Teal #01F9C6 ΔE 0.045
- Light Teal #90E4C1 ΔE 0.046
- Bright Light Blue #26F7FD ΔE 0.061
- Light Aquamarine #7BFDC7 ΔE 0.061
Use #51ECCF 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.