#596FAB
Closest named color: French Blue (#436BAD). oklch(55.1% 0.098 267.8), rgb(89, 111, 171).
Aa
White text reads best on this color (4.89:1).
About this color
#596FAB is a medium-dark, moderately saturated blue. In OKLCH its lightness is 55%, its chroma 0.098 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.030 away. White text reads best on it, at 4.89:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.098) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 4.28:1 |
| White text | 4.89:1 |
Values
| HEX | #596FAB |
| RGB | rgb(89, 111, 171) |
| HSL | hsl(224, 33%, 51%) |
| OKLCH | oklch(55.1% 0.098 267.8) |
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 #596FAB | 4.89:1 | AA | Lc -79.3 | Fine for body text |
| Black text on #596FAB | 4.28:1 | AA large text | Lc 30.2 | Non-text elements, placeholder text |
| #596FAB text on white | 4.89:1 | AA | Lc 73.9 | Content text, not long reading |
| #596FAB text on black | 4.28:1 | AA large text | Lc -27.8 | 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 600.
-
Step 50
50
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E6EAF3
oklch(93.7% 0.013 266.7)
-
Step 200
200
#D2D9EA
oklch(88.5% 0.025 267.9)
-
Step 300
300
#B4C0DE
oklch(80.8% 0.044 268.1)
-
Step 400
400
#8EA0CD
oklch(70.8% 0.069 267.7)
-
Step 500
500
#7287C0
oklch(63% 0.09 268.3)
-
Step 600
600 (this color)
#596FAB
oklch(55.1% 0.098 267.8)
-
Step 700
700
#4A5E94
oklch(49% 0.09 267.6)
-
Step 800
800
#3D4D78
oklch(42.7% 0.075 267.7)
-
Step 900
900
#344061
oklch(37.6% 0.059 268.2)
-
Step 950
950
#1F2639
oklch(27.1% 0.037 268.4)
#596FAB 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) | #5975AD | 0.017 |
| Deuteranopia (no green cones) | #506DAA | 0.013 |
| Tritanopia (no blue cones) | #397C85 | 0.088 |
| Achromatopsia (no color) | #717171 | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #596FAB
#596FAB
oklch(55.1% 0.098 267.8)
- #8A6E23
#8A6E23
oklch(55.2% 0.098 87.7)
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 #596FAB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.030
- Flat Blue #3C73A8 ΔE 0.033
- Dull Blue #49759C ΔE 0.038
- Muted Blue #3B719F ΔE 0.040
- Windows Blue #3778BF ΔE 0.045
- Stormy Blue #507B9C ΔE 0.048
- Cerulean #457B9D ΔE 0.050
- Metallic Blue #4F738E ΔE 0.053
Use #596FAB 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.