#64B3CC
Closest named color: Turquoise Blue (#06B1C4). oklch(72.6% 0.086 220.6), rgb(100, 179, 204).
Aa
Black text reads best on this color (8.86:1).
About this color
#64B3CC is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 73%, its chroma 0.086 and its hue 221°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.050 away. Black text reads best on it, at 8.86:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (73%) |
| Chroma | moderately saturated (0.086) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 8.86:1 |
| White text | 2.36:1 |
Values
| HEX | #64B3CC |
| RGB | rgb(100, 179, 204) |
| HSL | hsl(194, 50%, 60%) |
| OKLCH | oklch(72.6% 0.086 220.6) |
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 #64B3CC | 2.36:1 | Fails | Lc -51.5 | Large or bold text, headings |
| Black text on #64B3CC | 8.86:1 | AAA | Lc 57.4 | Large or bold text, headings |
| #64B3CC text on white | 2.36:1 | Fails | Lc 46.6 | Large or bold text, headings |
| #64B3CC text on black | 8.86:1 | AAA | Lc -55.5 | 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
#F0F7F9
oklch(97.1% 0.008 216.6)
-
Step 100
100
#DFECF1
oklch(93.5% 0.015 222.7)
-
Step 200
200
#C5DEE7
oklch(88.5% 0.029 221.4)
-
Step 300
300
#9BC9D9
oklch(80.9% 0.053 221.2)
-
Step 400
400 (this color)
#64B3CC
oklch(72.6% 0.086 220.6)
-
Step 500
500
#1C98B8
oklch(63.1% 0.11 221)
-
Step 600
600
#00809D
oklch(55.6% 0.102 221.1)
-
Step 700
700
#006C84
oklch(49.2% 0.09 220.2)
-
Step 800
800
#00586D
oklch(42.6% 0.078 221.3)
-
Step 900
900
#004A5B
oklch(37.8% 0.069 219.8)
-
Step 950
950
#052B36
oklch(26.9% 0.045 221.8)
#64B3CC 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) | #A4AFCD | 0.072 |
| Deuteranopia (no green cones) | #94A3CC | 0.065 |
| Tritanopia (no blue cones) | #24BBBB | 0.055 |
| Achromatopsia (no color) | #A8A8A8 | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #64B3CC
#64B3CC
oklch(72.6% 0.086 220.6)
- #D5947D
#D5947D
oklch(72.5% 0.086 40.3)
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 #64B3CC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.050
- Greyblue #77A1B5 ΔE 0.052
- Bluegrey #85A3B2 ΔE 0.054
- Bluey Grey #89A0B0 ΔE 0.062
- Cool Steel #97A7B3 ΔE 0.063
- Vivid Sky Blue #4CC9F0 ΔE 0.067
- Light Sea Green #20B2AA ΔE 0.070
- Light Grey Blue #9DBCD4 ΔE 0.070
Use #64B3CC 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.