#4B64A3
Closest named color: French Blue (#436BAD). oklch(51.3% 0.105 266.4), rgb(75, 100, 163).
Aa
White text reads best on this color (5.75:1).
About this color
#4B64A3 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 51%, its chroma 0.105 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.023 away. White text reads best on it, at 5.75:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.105) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 3.65:1 |
| White text | 5.75:1 |
Values
| HEX | #4B64A3 |
| RGB | rgb(75, 100, 163) |
| HSL | hsl(223, 37%, 47%) |
| OKLCH | oklch(51.3% 0.105 266.4) |
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 #4B64A3 | 5.75:1 | AA | Lc -83.9 | Fine for body text |
| Black text on #4B64A3 | 3.65:1 | AA large text | Lc 25.4 | Dividers and decoration only |
| #4B64A3 text on white | 5.75:1 | AA | Lc 78.6 | Fine for body text |
| #4B64A3 text on black | 3.65:1 | AA large text | Lc -23.2 | Dividers and decoration only |
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 700.
-
Step 50
50
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E5EAF4
oklch(93.6% 0.015 264.5)
-
Step 200
200
#D0D9EC
oklch(88.4% 0.028 265.4)
-
Step 300
300
#B2C0E2
oklch(80.8% 0.051 267.6)
-
Step 400
400
#89A0D4
oklch(70.8% 0.081 265.9)
-
Step 500
500
#6C87C8
oklch(63% 0.103 266.3)
-
Step 600
600
#5570B5
oklch(55.6% 0.112 266.6)
-
Step 700
700 (this color)
#4B64A3
oklch(51.3% 0.105 266.4)
-
Step 800
800
#394D7E
oklch(42.8% 0.085 266.1)
-
Step 900
900
#314066
oklch(37.7% 0.068 266.8)
-
Step 950
950
#1D263B
oklch(27.1% 0.041 266)
#4B64A3 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) | #4B6AA6 | 0.017 |
| Deuteranopia (no green cones) | #4062A2 | 0.015 |
| Tritanopia (no blue cones) | #1E727B | 0.095 |
| Achromatopsia (no color) | #666666 | 0.105 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B64A3
#4B64A3
oklch(51.3% 0.105 266.4)
- #816201
#816201
oklch(51.3% 0.105 86.8)
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 #4B64A3, closest first.
No curated palette has a color within ΔE 0.04 of #4B64A3.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.023
- Dusky Blue #475F94 ΔE 0.027
- Mid Blue #276AB3 ΔE 0.040
- Muted Blue #3B719F ΔE 0.041
- Denim Blue #3B5B92 ΔE 0.042
- Flat Blue #3C73A8 ΔE 0.042
- Denim #3B638C ΔE 0.043
- Dull Blue #49759C ΔE 0.053
Use #4B64A3 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.