#64BBC6
Closest named color: Turquoise Blue (#06B1C4). oklch(74.2% 0.085 206.2), rgb(100, 187, 198).
Aa
Black text reads best on this color (9.46:1).
About this color
#64BBC6 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 74%, its chroma 0.085 and its hue 206°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.057 away. Black text reads best on it, at 9.46:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (74%) |
| Chroma | moderately saturated (0.085) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 9.46:1 |
| White text | 2.21:1 |
Values
| HEX | #64BBC6 |
| RGB | rgb(100, 187, 198) |
| HSL | hsl(187, 46%, 58%) |
| OKLCH | oklch(74.2% 0.085 206.2) |
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 #64BBC6 | 2.21:1 | Fails | Lc -48.3 | Large or bold text, headings |
| Black text on #64BBC6 | 9.46:1 | AAA | Lc 60.4 | Content text, not long reading |
| #64BBC6 text on white | 2.21:1 | Fails | Lc 43.5 | Non-text elements, placeholder text |
| #64BBC6 text on black | 9.46:1 | AAA | Lc -58.6 | Large or bold text, headings |
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 400.
-
Step 50
50
#F0F7F8
oklch(97.1% 0.008 207.1)
-
Step 100
100
#DFEDEF
oklch(93.6% 0.015 207.1)
-
Step 200
200
#C4DFE3
oklch(88.5% 0.029 207.4)
-
Step 300
300
#99CBD2
oklch(80.9% 0.053 206.9)
-
Step 400
400 (this color)
#64BBC6
oklch(74.2% 0.085 206.2)
-
Step 500
500
#009BAA
oklch(63% 0.108 206.9)
-
Step 600
600
#00838F
oklch(55.7% 0.095 206.1)
-
Step 700
700
#006E78
oklch(49.1% 0.084 205.8)
-
Step 800
800
#005A63
oklch(42.7% 0.073 206.6)
-
Step 900
900
#004B52
oklch(37.7% 0.064 205.5)
-
Step 950
950
#022C31
oklch(26.9% 0.044 207)
#64BBC6 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) | #AFB5C7 | 0.084 |
| Deuteranopia (no green cones) | #9FA9C6 | 0.077 |
| Tritanopia (no blue cones) | #28C1BE | 0.042 |
| Achromatopsia (no color) | #AEAEAE | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #64BBC6
#64BBC6
oklch(74.2% 0.085 206.2)
- #DC978F
#DC978F
oklch(74.2% 0.085 26.6)
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 #64BBC6, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.057
- Dark Turquoise #00CED1 ΔE 0.058
- Topaz #13BBAF ΔE 0.058
- Medium Turquoise #48D1CC ΔE 0.060
- Vivid Sky Blue #4CC9F0 ΔE 0.061
- Light Cornflower Blue #98C1D9 ΔE 0.065
- Light Sea Green #20B2AA ΔE 0.065
- Light Grey Blue #9DBCD4 ΔE 0.066
Use #64BBC6 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.