#64A3CE
Closest named color: Greyblue (#77A1B5). oklch(69% 0.091 239.8), rgb(100, 163, 206).
Aa
Black text reads best on this color (7.67:1).
About this color
#64A3CE is a medium-light, moderately saturated blue. In OKLCH its lightness is 69%, its chroma 0.091 and its hue 240°. Its hue sits on the cool side of the wheel. The nearest named color is Greyblue (#77A1B5), ΔE 0.039 away. Black text reads best on it, at 7.67:1.
| Hue family | Blues |
| Lightness | medium-light (69%) |
| Chroma | moderately saturated (0.091) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 7.67:1 |
| White text | 2.73:1 |
Values
| HEX | #64A3CE |
| RGB | rgb(100, 163, 206) |
| HSL | hsl(204, 52%, 60%) |
| OKLCH | oklch(69% 0.091 239.8) |
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 #64A3CE | 2.73:1 | Fails | Lc -58.0 | Large or bold text, headings |
| Black text on #64A3CE | 7.67:1 | AAA | Lc 51.2 | Large or bold text, headings |
| #64A3CE text on white | 2.73:1 | Fails | Lc 52.8 | Large or bold text, headings |
| #64A3CE text on black | 7.67:1 | AAA | Lc -49.0 | 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
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E0ECF4
oklch(93.6% 0.017 236.7)
-
Step 200
200
#C7DDEC
oklch(88.6% 0.031 237.6)
-
Step 300
300
#A0C6E2
oklch(80.8% 0.057 240.3)
-
Step 400
400 (this color)
#64A3CE
oklch(69% 0.091 239.8)
-
Step 500
500
#3A92C8
oklch(63.1% 0.116 239.5)
-
Step 600
600
#027BB5
oklch(55.6% 0.127 239.9)
-
Step 700
700
#006799
oklch(49% 0.112 240)
-
Step 800
800
#00557E
oklch(42.8% 0.097 239.2)
-
Step 900
900
#114665
oklch(37.6% 0.075 239.6)
-
Step 950
950
#0D293B
oklch(26.9% 0.047 240.1)
#64A3CE 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) | #90A3D0 | 0.051 |
| Deuteranopia (no green cones) | #8197CD | 0.043 |
| Tritanopia (no blue cones) | #28AEB1 | 0.074 |
| Achromatopsia (no color) | #9C9C9C | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #64A3CE
#64A3CE
oklch(69% 0.091 239.8)
- #C58E60
#C58E60
oklch(69% 0.091 60.4)
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 #64A3CE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greyblue #77A1B5 ΔE 0.039
- Bluegrey #85A3B2 ΔE 0.053
- Bluey Grey #89A0B0 ΔE 0.056
- Cool Gray #8D99AE ΔE 0.061
- Turquoise Blue #06B1C4 ΔE 0.063
- Faded Blue #658CBB ΔE 0.064
- Cornflower Blue #6495ED ΔE 0.068
- Cadet Blue #5F9EA0 ΔE 0.068
Use #64A3CE 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.