#51DEBE
Closest named color: Turquoise (#40E0D0). oklch(81.6% 0.13 174.9), rgb(81, 222, 190).
Aa
Black text reads best on this color (12.54:1).
About this color
#51DEBE is a light, moderately saturated teal or cyan. In OKLCH its lightness is 82%, its chroma 0.130 and its hue 175°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise (#40E0D0), ΔE 0.024 away. Black text reads best on it, at 12.54:1.
| Hue family | Teals and cyans |
| Lightness | light (82%) |
| Chroma | moderately saturated (0.130) |
| Temperature | cool |
| Nearest name | Turquoise (#40E0D0) |
| Black text | 12.54:1 |
| White text | 1.67:1 |
Values
| HEX | #51DEBE |
| RGB | rgb(81, 222, 190) |
| HSL | hsl(166, 68%, 59%) |
| OKLCH | oklch(81.6% 0.13 174.9) |
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 #51DEBE | 1.67:1 | Fails | Lc -32.9 | Non-text elements, placeholder text |
| Black text on #51DEBE | 12.54:1 | AAA | Lc 74.6 | Content text, not long reading |
| #51DEBE text on white | 1.67:1 | Fails | Lc 29.2 | Dividers and decoration only |
| #51DEBE text on black | 12.54:1 | AAA | Lc -73.6 | 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
#EAFAF5
oklch(97.2% 0.018 175.3)
-
Step 100
100
#D1F3E8
oklch(93.7% 0.038 173.9)
-
Step 200
200
#A7E9D6
oklch(88.4% 0.071 174.8)
-
Step 300
300 (this color)
#51DEBE
oklch(81.6% 0.13 174.9)
-
Step 400
400
#00BB9C
oklch(70.7% 0.133 175.1)
-
Step 500
500
#00A085
oklch(63% 0.119 175)
-
Step 600
600
#008770
oklch(55.7% 0.105 175.1)
-
Step 700
700
#00715E
oklch(49% 0.092 175.6)
-
Step 800
800
#005D4C
oklch(42.7% 0.081 174.6)
-
Step 900
900
#004E3F
oklch(37.8% 0.072 174.1)
-
Step 950
950
#002E25
oklch(26.9% 0.05 175.6)
#51DEBE 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) | #D6D1BD | 0.135 |
| Deuteranopia (no green cones) | #C2C2C0 | 0.129 |
| Tritanopia (no blue cones) | #00E1D5 | 0.034 |
| Achromatopsia (no color) | #C8C8C8 | 0.131 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51DEBE
#51DEBE
oklch(81.6% 0.13 174.9)
- #FFA3C7
#FFA3C7
oklch(81.7% 0.117 354.9)
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 #51DEBE, closest first.
No curated palette has a color within ΔE 0.04 of #51DEBE.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise #40E0D0 ΔE 0.024
- Aqua Marine #2EE8BB ΔE 0.032
- Seafoam Blue #78D1B6 ΔE 0.040
- Medium Aquamarine #66CDAA ΔE 0.046
- Medium Turquoise #48D1CC ΔE 0.048
- Emerald #06D6A0 ΔE 0.053
- Light Teal #90E4C1 ΔE 0.054
- Pale Teal #82CBB2 ΔE 0.057
Use #51DEBE 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.