#64BBC4
Closest named color: Topaz (#13BBAF). oklch(74.1% 0.085 204.3), rgb(100, 187, 196).
Aa
Black text reads best on this color (9.44:1).
About this color
#64BBC4 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 74%, its chroma 0.085 and its hue 204°. Its hue sits on the cool side of the wheel. The nearest named color is Topaz (#13BBAF), ΔE 0.056 away. Black text reads best on it, at 9.44:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (74%) |
| Chroma | moderately saturated (0.085) |
| Temperature | cool |
| Nearest name | Topaz (#13BBAF) |
| Black text | 9.44:1 |
| White text | 2.22:1 |
Values
| HEX | #64BBC4 |
| RGB | rgb(100, 187, 196) |
| HSL | hsl(186, 45%, 58%) |
| OKLCH | oklch(74.1% 0.085 204.3) |
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 #64BBC4 | 2.22:1 | Fails | Lc -48.4 | Large or bold text, headings |
| Black text on #64BBC4 | 9.44:1 | AAA | Lc 60.3 | Content text, not long reading |
| #64BBC4 text on white | 2.22:1 | Fails | Lc 43.6 | Non-text elements, placeholder text |
| #64BBC4 text on black | 9.44:1 | AAA | Lc -58.5 | 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
#C4DFE2
oklch(88.5% 0.029 204.8)
-
Step 300
300
#99CBD0
oklch(80.9% 0.052 203.8)
-
Step 400
400 (this color)
#64BBC4
oklch(74.1% 0.085 204.3)
-
Step 500
500
#009CA8
oklch(63.2% 0.108 204.4)
-
Step 600
600
#00838D
oklch(55.6% 0.095 204.2)
-
Step 700
700
#006E77
oklch(49.1% 0.084 204.7)
-
Step 800
800
#005A61
oklch(42.6% 0.073 204)
-
Step 900
900
#004B51
oklch(37.6% 0.064 204)
-
Step 950
950
#022D31
oklch(27.2% 0.045 204.4)
#64BBC4 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) | #AFB5C5 | 0.084 |
| Deuteranopia (no green cones) | #9FA9C4 | 0.077 |
| Tritanopia (no blue cones) | #2AC1BE | 0.039 |
| Achromatopsia (no color) | #AEAEAE | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #64BBC4
#64BBC4
oklch(74.1% 0.085 204.3)
- #DC9691
#DC9691
oklch(74.1% 0.085 23.9)
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 #64BBC4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Topaz #13BBAF ΔE 0.056
- Turquoise Blue #06B1C4 ΔE 0.057
- Dark Turquoise #00CED1 ΔE 0.058
- Medium Turquoise #48D1CC ΔE 0.060
- Light Sea Green #20B2AA ΔE 0.064
- Vivid Sky Blue #4CC9F0 ΔE 0.064
- Light Cornflower Blue #98C1D9 ΔE 0.067
- Pale Teal #82CBB2 ΔE 0.067
Use #64BBC4 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.