#64C3CB
Closest named color: Medium Turquoise (#48D1CC). oklch(76.2% 0.091 202.7), rgb(100, 195, 203).
Aa
Black text reads best on this color (10.21:1).
About this color
#64C3CB is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 76%, its chroma 0.091 and its hue 203°. Its hue sits on the cool side of the wheel. The nearest named color is Medium Turquoise (#48D1CC), ΔE 0.041 away. Black text reads best on it, at 10.21:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (76%) |
| Chroma | moderately saturated (0.091) |
| Temperature | cool |
| Nearest name | Medium Turquoise (#48D1CC) |
| Black text | 10.21:1 |
| White text | 2.05:1 |
Values
| HEX | #64C3CB |
| RGB | rgb(100, 195, 203) |
| HSL | hsl(185, 50%, 59%) |
| OKLCH | oklch(76.2% 0.091 202.7) |
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 #64C3CB | 2.05:1 | Fails | Lc -44.5 | Non-text elements, placeholder text |
| Black text on #64C3CB | 10.21:1 | AAA | Lc 64.0 | Content text, not long reading |
| #64C3CB text on white | 2.05:1 | Fails | Lc 39.9 | Non-text elements, placeholder text |
| #64C3CB text on black | 10.21:1 | AAA | Lc -62.4 | 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
#EDF8F9
oklch(97.1% 0.012 203.5)
-
Step 100
100
#D7EFF1
oklch(93.5% 0.025 202.8)
-
Step 200
200
#B3E4E8
oklch(88.6% 0.051 202.5)
-
Step 300
300 (this color)
#64C3CB
oklch(76.2% 0.091 202.7)
-
Step 400
400
#00B6C1
oklch(70.7% 0.12 202.5)
-
Step 500
500
#009CA6
oklch(63.1% 0.107 202.8)
-
Step 600
600
#00838C
oklch(55.6% 0.095 203.3)
-
Step 700
700
#006E75
oklch(49% 0.083 202.5)
-
Step 800
800
#005A60
oklch(42.6% 0.073 202.7)
-
Step 900
900
#004B50
oklch(37.6% 0.064 202.5)
-
Step 950
950
#002D30
oklch(27% 0.046 201.8)
#64C3CB 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) | #B7BCCC | 0.092 |
| Deuteranopia (no green cones) | #A6AFCC | 0.085 |
| Tritanopia (no blue cones) | #1CC9C5 | 0.041 |
| Achromatopsia (no color) | #B5B5B5 | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #64C3CB
#64C3CB
oklch(76.2% 0.091 202.7)
- #E69B97
#E69B97
oklch(76.2% 0.091 22.8)
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 #64C3CB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Turquoise #48D1CC ΔE 0.041
- Dark Turquoise #00CED1 ΔE 0.044
- Vivid Sky Blue #4CC9F0 ΔE 0.051
- Pale Teal #82CBB2 ΔE 0.054
- Light Cornflower Blue #98C1D9 ΔE 0.059
- Seafoam Blue #78D1B6 ΔE 0.060
- Medium Aquamarine #66CDAA ΔE 0.063
- Sky Blue #87CEEB ΔE 0.063
Use #64C3CB 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.