#64ACC4
Closest named color: Greyblue (#77A1B5). oklch(70.6% 0.08 221.6), rgb(100, 172, 196).
Aa
Black text reads best on this color (8.23:1).
About this color
#64ACC4 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 71%, its chroma 0.080 and its hue 222°. Its hue sits on the cool side of the wheel. The nearest named color is Greyblue (#77A1B5), ΔE 0.034 away. Black text reads best on it, at 8.23:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (71%) |
| Chroma | moderately saturated (0.080) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 8.23:1 |
| White text | 2.54:1 |
Values
| HEX | #64ACC4 |
| RGB | rgb(100, 172, 196) |
| HSL | hsl(195, 45%, 58%) |
| OKLCH | oklch(70.6% 0.08 221.6) |
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 #64ACC4 | 2.54:1 | Fails | Lc -54.9 | Large or bold text, headings |
| Black text on #64ACC4 | 8.23:1 | AAA | Lc 54.2 | Large or bold text, headings |
| #64ACC4 text on white | 2.54:1 | Fails | Lc 49.8 | Large or bold text, headings |
| #64ACC4 text on black | 8.23:1 | AAA | Lc -52.2 | 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
#F1F7F9
oklch(97.2% 0.007 219.6)
-
Step 100
100
#E0ECF1
oklch(93.6% 0.015 224.5)
-
Step 200
200
#C6DEE6
oklch(88.5% 0.028 219.8)
-
Step 300
300
#9EC9D8
oklch(81% 0.05 221.2)
-
Step 400
400 (this color)
#64ACC4
oklch(70.6% 0.08 221.6)
-
Step 500
500
#2E97B5
oklch(63.1% 0.102 221.3)
-
Step 600
600
#00809E
oklch(55.6% 0.103 221.9)
-
Step 700
700
#006C85
oklch(49.2% 0.09 221.2)
-
Step 800
800
#00586D
oklch(42.6% 0.078 221.3)
-
Step 900
900
#06495B
oklch(37.7% 0.067 222.3)
-
Step 950
950
#092B35
oklch(27% 0.042 221.3)
#64ACC4 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) | #9EA8C5 | 0.067 |
| Deuteranopia (no green cones) | #8F9DC4 | 0.060 |
| Tritanopia (no blue cones) | #30B4B3 | 0.053 |
| Achromatopsia (no color) | #A2A2A2 | 0.080 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #64ACC4
#64ACC4
oklch(70.6% 0.08 221.6)
- #CC9079
#CC9079
oklch(70.7% 0.08 41.8)
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 #64ACC4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greyblue #77A1B5 ΔE 0.034
- Bluegrey #85A3B2 ΔE 0.042
- Turquoise Blue #06B1C4 ΔE 0.046
- Bluey Grey #89A0B0 ΔE 0.049
- Cool Steel #97A7B3 ΔE 0.058
- Cadet Blue #5F9EA0 ΔE 0.059
- Cool Gray #8D99AE ΔE 0.064
- Cool Grey #95A3A6 ΔE 0.064
Use #64ACC4 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.