#64BFB3
Closest named color: Topaz (#13BBAF). oklch(74.5% 0.089 184.4), rgb(100, 191, 179).
Aa
Black text reads best on this color (9.64:1).
About this color
#64BFB3 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 74%, its chroma 0.089 and its hue 184°. Its hue sits on the cool side of the wheel. The nearest named color is Topaz (#13BBAF), ΔE 0.045 away. Black text reads best on it, at 9.64:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (74%) |
| Chroma | moderately saturated (0.089) |
| Temperature | cool |
| Nearest name | Topaz (#13BBAF) |
| Black text | 9.64:1 |
| White text | 2.17:1 |
Values
| HEX | #64BFB3 |
| RGB | rgb(100, 191, 179) |
| HSL | hsl(172, 42%, 57%) |
| OKLCH | oklch(74.5% 0.089 184.4) |
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 #64BFB3 | 2.17:1 | Fails | Lc -47.4 | Large or bold text, headings |
| Black text on #64BFB3 | 9.64:1 | AAA | Lc 61.3 | Content text, not long reading |
| #64BFB3 text on white | 2.17:1 | Fails | Lc 42.6 | Non-text elements, placeholder text |
| #64BFB3 text on black | 9.64:1 | AAA | Lc -59.6 | 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
#F0F7F6
oklch(97.1% 0.008 186.9)
-
Step 100
100
#DFEEEB
oklch(93.7% 0.016 182.7)
-
Step 200
200
#C4E0DB
oklch(88.5% 0.03 183.7)
-
Step 300
300
#98CDC5
oklch(80.9% 0.056 184.6)
-
Step 400
400 (this color)
#64BFB3
oklch(74.5% 0.089 184.4)
-
Step 500
500
#009F91
oklch(63.1% 0.112 184)
-
Step 600
600
#00867A
oklch(55.7% 0.099 183.9)
-
Step 700
700
#007067
oklch(49% 0.086 185.2)
-
Step 800
800
#005C54
oklch(42.7% 0.075 184.7)
-
Step 900
900
#004D46
oklch(37.8% 0.067 184.5)
-
Step 950
950
#012E29
oklch(27.1% 0.047 183.5)
#64BFB3 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) | #B7B6B3 | 0.095 |
| Deuteranopia (no green cones) | #A8ABB4 | 0.090 |
| Tritanopia (no blue cones) | #38C2BB | 0.028 |
| Achromatopsia (no color) | #B0B0B0 | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #64BFB3
#64BFB3
oklch(74.5% 0.089 184.4)
- #DD95A5
#DD95A5
oklch(74.6% 0.089 4.9)
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 #64BFB3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Topaz #13BBAF ΔE 0.045
- Medium Aquamarine #66CDAA ΔE 0.046
- Pale Teal #82CBB2 ΔE 0.047
- Medium Turquoise #48D1CC ΔE 0.051
- Dark Turquoise #00CED1 ΔE 0.055
- Muted Teal #90B494 ΔE 0.055
- Seafoam Blue #78D1B6 ΔE 0.056
- Dark Sea Green #8FBC8F ΔE 0.058
Use #64BFB3 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.