#64A3C8
Closest named color: Greyblue (#77A1B5). oklch(68.7% 0.085 235.6), rgb(100, 163, 200).
Aa
Black text reads best on this color (7.61:1).
About this color
#64A3C8 is a medium-light, moderately saturated blue. In OKLCH its lightness is 69%, its chroma 0.085 and its hue 236°. Its hue sits on the cool side of the wheel. The nearest named color is Greyblue (#77A1B5), ΔE 0.032 away. Black text reads best on it, at 7.61:1.
| Hue family | Blues |
| Lightness | medium-light (69%) |
| Chroma | moderately saturated (0.085) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 7.61:1 |
| White text | 2.75:1 |
Values
| HEX | #64A3C8 |
| RGB | rgb(100, 163, 200) |
| HSL | hsl(202, 48%, 59%) |
| OKLCH | oklch(68.7% 0.085 235.6) |
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 #64A3C8 | 2.75:1 | Fails | Lc -58.4 | Large or bold text, headings |
| Black text on #64A3C8 | 7.61:1 | AAA | Lc 50.9 | Large or bold text, headings |
| #64A3C8 text on white | 2.75:1 | Fails | Lc 53.1 | Large or bold text, headings |
| #64A3C8 text on black | 7.61:1 | AAA | Lc -48.7 | 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
#E1ECF3
oklch(93.7% 0.015 235.4)
-
Step 200
200
#C7DDEA
oklch(88.5% 0.03 233.6)
-
Step 300
300
#A0C7DF
oklch(81% 0.054 235.3)
-
Step 400
400 (this color)
#64A3C8
oklch(68.7% 0.085 235.6)
-
Step 500
500
#3C93C2
oklch(63.1% 0.108 235.9)
-
Step 600
600
#057DAE
oklch(55.7% 0.117 235.2)
-
Step 700
700
#006994
oklch(49.2% 0.105 235.5)
-
Step 800
800
#025679
oklch(42.8% 0.09 234.9)
-
Step 900
900
#124762
oklch(37.8% 0.071 235.8)
-
Step 950
950
#0D2A39
oklch(27.1% 0.044 234.3)
#64A3C8 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) | #92A2CA | 0.053 |
| Deuteranopia (no green cones) | #8497C7 | 0.046 |
| Tritanopia (no blue cones) | #2FADAF | 0.067 |
| Achromatopsia (no color) | #9C9C9C | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #64A3C8
#64A3C8
oklch(68.7% 0.085 235.6)
- #C38D67
#C38D67
oklch(68.7% 0.084 56)
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 #64A3C8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greyblue #77A1B5 ΔE 0.032
- Bluegrey #85A3B2 ΔE 0.047
- Bluey Grey #89A0B0 ΔE 0.050
- Cool Gray #8D99AE ΔE 0.057
- Turquoise Blue #06B1C4 ΔE 0.059
- Cadet Blue #5F9EA0 ΔE 0.059
- Faded Blue #658CBB ΔE 0.063
- Silver Lake Blue #778DA9 ΔE 0.066
Use #64A3C8 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.