#51D7CD
Closest named color: Medium Turquoise (#48D1CC). oklch(80.4% 0.116 188.2), rgb(81, 215, 205).
Aa
Black text reads best on this color (11.95:1).
About this color
#51D7CD is a light, moderately saturated teal or cyan. In OKLCH its lightness is 80%, its chroma 0.116 and its hue 188°. Its hue sits on the cool side of the wheel. The nearest named color is Medium Turquoise (#48D1CC), ΔE 0.018 away. Black text reads best on it, at 11.95:1.
| Hue family | Teals and cyans |
| Lightness | light (80%) |
| Chroma | moderately saturated (0.116) |
| Temperature | cool |
| Nearest name | Medium Turquoise (#48D1CC) |
| Black text | 11.95:1 |
| White text | 1.75:1 |
Values
| HEX | #51D7CD |
| RGB | rgb(81, 215, 205) |
| HSL | hsl(176, 63%, 58%) |
| OKLCH | oklch(80.4% 0.116 188.2) |
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 #51D7CD | 1.75:1 | Fails | Lc -35.7 | Non-text elements, placeholder text |
| Black text on #51D7CD | 11.95:1 | AAA | Lc 72.0 | Content text, not long reading |
| #51D7CD text on white | 1.75:1 | Fails | Lc 31.8 | Non-text elements, placeholder text |
| #51D7CD text on black | 11.95:1 | AAA | Lc -70.9 | 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
#EAF9F7
oklch(97% 0.016 187.3)
-
Step 100
100
#D2F2EE
oklch(93.7% 0.034 187.4)
-
Step 200
200
#A8E8E1
oklch(88.6% 0.065 187.6)
-
Step 300
300 (this color)
#51D7CD
oklch(80.4% 0.116 188.2)
-
Step 400
400
#00B9AF
oklch(70.8% 0.123 188)
-
Step 500
500
#009E96
oklch(63% 0.109 188.5)
-
Step 600
600
#00857E
oklch(55.6% 0.097 188.3)
-
Step 700
700
#00706A
oklch(49.1% 0.085 188.3)
-
Step 800
800
#005C57
oklch(42.8% 0.074 188.4)
-
Step 900
900
#004C48
oklch(37.6% 0.065 188.7)
-
Step 950
950
#002E2B
oklch(27.1% 0.047 188)
#51D7CD 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) | #CCCCCD | 0.124 |
| Deuteranopia (no green cones) | #B7BDCE | 0.116 |
| Tritanopia (no blue cones) | #00DCD4 | 0.024 |
| Achromatopsia (no color) | #C3C3C3 | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51D7CD
#51D7CD
oklch(80.4% 0.116 188.2)
- #FF9FB0
#FF9FB0
oklch(80.4% 0.116 8.5)
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 #51D7CD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Turquoise #48D1CC ΔE 0.018
- Turquoise #40E0D0 ΔE 0.024
- Seafoam Blue #78D1B6 ΔE 0.037
- Dark Turquoise #00CED1 ΔE 0.040
- Aqua Blue #02D8E9 ΔE 0.042
- Medium Aquamarine #66CDAA ΔE 0.047
- Pale Teal #82CBB2 ΔE 0.049
- Tiffany Blue #94D2BD ΔE 0.055
Use #51D7CD 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.