#64C9D4
Closest named color: Medium Turquoise (#48D1CC). oklch(78% 0.095 204.9), rgb(100, 201, 212).
Aa
Black text reads best on this color (10.84:1).
About this color
#64C9D4 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 78%, its chroma 0.095 and its hue 205°. Its hue sits on the cool side of the wheel. The nearest named color is Medium Turquoise (#48D1CC), ΔE 0.033 away. Black text reads best on it, at 10.84:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (78%) |
| Chroma | moderately saturated (0.095) |
| Temperature | cool |
| Nearest name | Medium Turquoise (#48D1CC) |
| Black text | 10.84:1 |
| White text | 1.93:1 |
Values
| HEX | #64C9D4 |
| RGB | rgb(100, 201, 212) |
| HSL | hsl(186, 57%, 61%) |
| OKLCH | oklch(78% 0.095 204.9) |
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 #64C9D4 | 1.93:1 | Fails | Lc -41.2 | Non-text elements, placeholder text |
| Black text on #64C9D4 | 10.84:1 | AAA | Lc 67.0 | Content text, not long reading |
| #64C9D4 text on white | 1.93:1 | Fails | Lc 36.9 | Non-text elements, placeholder text |
| #64C9D4 text on black | 10.84:1 | AAA | Lc -65.5 | 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
#ECF8F9
oklch(97% 0.013 202.9)
-
Step 100
100
#D6F0F3
oklch(93.7% 0.028 205.1)
-
Step 200
200
#B1E4EA
oklch(88.5% 0.053 205.2)
-
Step 300
300 (this color)
#64C9D4
oklch(78% 0.095 204.9)
-
Step 400
400
#00B6C4
oklch(70.8% 0.121 204.6)
-
Step 500
500
#009CA8
oklch(63.2% 0.108 204.4)
-
Step 600
600
#00838E
oklch(55.7% 0.095 205.2)
-
Step 700
700
#006E77
oklch(49.1% 0.084 204.7)
-
Step 800
800
#005A62
oklch(42.7% 0.073 205.3)
-
Step 900
900
#004B52
oklch(37.7% 0.064 205.5)
-
Step 950
950
#002D31
oklch(27.1% 0.046 204.1)
#64C9D4 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) | #BBC2D5 | 0.094 |
| Deuteranopia (no green cones) | #AAB5D4 | 0.087 |
| Tritanopia (no blue cones) | #00D0CC | 0.045 |
| Achromatopsia (no color) | #BABABA | 0.096 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #64C9D4
#64C9D4
oklch(78% 0.095 204.9)
- #EE9F99
#EE9F99
oklch(77.9% 0.095 24.3)
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 #64C9D4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Turquoise #48D1CC ΔE 0.033
- Dark Turquoise #00CED1 ΔE 0.040
- Vivid Sky Blue #4CC9F0 ΔE 0.042
- Aqua Blue #02D8E9 ΔE 0.049
- Sky Blue #87CEEB ΔE 0.050
- Pale Teal #82CBB2 ΔE 0.054
- Light Cornflower Blue #98C1D9 ΔE 0.055
- Seafoam Blue #78D1B6 ΔE 0.056
Use #64C9D4 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.