#64A3AB
Closest named color: Cadet Blue (#5F9EA0). oklch(67.6% 0.066 206), rgb(100, 163, 171).
Aa
Black text reads best on this color (7.36:1).
About this color
#64A3AB is a medium-light, muted teal or cyan. In OKLCH its lightness is 68%, its chroma 0.066 and its hue 206°. Its hue sits on the cool side of the wheel. The nearest named color is Cadet Blue (#5F9EA0), ΔE 0.020 away. Black text reads best on it, at 7.36:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (68%) |
| Chroma | muted (0.066) |
| Temperature | cool |
| Nearest name | Cadet Blue (#5F9EA0) |
| Black text | 7.36:1 |
| White text | 2.84:1 |
Values
| HEX | #64A3AB |
| RGB | rgb(100, 163, 171) |
| HSL | hsl(187, 30%, 53%) |
| OKLCH | oklch(67.6% 0.066 206) |
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 #64A3AB | 2.84:1 | Fails | Lc -59.8 | Large or bold text, headings |
| Black text on #64A3AB | 7.36:1 | AAA | Lc 49.5 | Large or bold text, headings |
| #64A3AB text on white | 2.84:1 | Fails | Lc 54.5 | Large or bold text, headings |
| #64A3AB text on black | 7.36:1 | AAA | Lc -47.3 | 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
#F1F7F7
oklch(97.2% 0.006 197.1)
-
Step 100
100
#E1ECEE
oklch(93.5% 0.012 209.8)
-
Step 200
200
#C9DEE0
oklch(88.6% 0.023 203.7)
-
Step 300
300
#A3C9CE
oklch(81% 0.041 206.2)
-
Step 400
400 (this color)
#64A3AB
oklch(67.6% 0.066 206)
-
Step 500
500
#4198A2
oklch(63.1% 0.084 205.6)
-
Step 600
600
#12828E
oklch(55.6% 0.092 206.6)
-
Step 700
700
#006E78
oklch(49.1% 0.084 205.8)
-
Step 800
800
#095A62
oklch(42.8% 0.07 205.7)
-
Step 900
900
#154A50
oklch(37.8% 0.055 205.9)
-
Step 950
950
#0F2B2F
oklch(26.9% 0.034 207.9)
#64A3AB 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) | #9A9EAC | 0.066 |
| Deuteranopia (no green cones) | #8E95AB | 0.060 |
| Tritanopia (no blue cones) | #45A8A5 | 0.032 |
| Achromatopsia (no color) | #999999 | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #64A3AB
#64A3AB
oklch(67.6% 0.066 206)
- #BC8882
#BC8882
oklch(67.6% 0.065 26.3)
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 #64A3AB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cadet Blue #5F9EA0 ΔE 0.020
- Greyblue #77A1B5 ΔE 0.028
- Bluegrey #85A3B2 ΔE 0.040
- Dull Teal #5F9E8F ΔE 0.041
- Bluey Grey #89A0B0 ΔE 0.044
- Grey Teal #5E9B8A ΔE 0.050
- Cool Gray #8D99AE ΔE 0.055
- Light Sea Green #20B2AA ΔE 0.057
Use #64A3AB 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.