#596FB3
Closest named color: French Blue (#436BAD). oklch(55.5% 0.109 269.1), rgb(89, 111, 179).
Aa
White text reads best on this color (4.82:1).
About this color
#596FB3 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 56%, its chroma 0.109 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.031 away. White text reads best on it, at 4.82:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.109) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 4.34:1 |
| White text | 4.82:1 |
Values
| HEX | #596FB3 |
| RGB | rgb(89, 111, 179) |
| HSL | hsl(225, 37%, 53%) |
| OKLCH | oklch(55.5% 0.109 269.1) |
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 #596FB3 | 4.82:1 | AA | Lc -78.8 | Fine for body text |
| Black text on #596FB3 | 4.34:1 | AA large text | Lc 30.7 | Non-text elements, placeholder text |
| #596FB3 text on white | 4.82:1 | AA | Lc 73.4 | Content text, not long reading |
| #596FB3 text on black | 4.34:1 | AA large text | Lc -28.3 | 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
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E6EAF4
oklch(93.7% 0.014 268.5)
-
Step 200
200
#D2D9EC
oklch(88.6% 0.027 269.6)
-
Step 300
300
#B3C0E1
oklch(80.9% 0.049 268.3)
-
Step 400
400
#8C9FD2
oklch(70.7% 0.078 268.6)
-
Step 500
500
#7186C7
oklch(63.1% 0.101 269.7)
-
Step 600
600 (this color)
#596FB3
oklch(55.5% 0.109 269.1)
-
Step 700
700
#495D9A
oklch(49.1% 0.101 268.8)
-
Step 800
800
#3C4C7D
oklch(42.7% 0.084 269)
-
Step 900
900
#334065
oklch(37.8% 0.066 268.4)
-
Step 950
950
#1E253B
oklch(26.9% 0.042 269.9)
#596FB3 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) | #5576B6 | 0.019 |
| Deuteranopia (no green cones) | #4B6EB1 | 0.018 |
| Tritanopia (no blue cones) | #337D88 | 0.097 |
| Achromatopsia (no color) | #727272 | 0.109 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #596FB3
#596FB3
oklch(55.5% 0.109 269.1)
- #8D6F0F
#8D6F0F
oklch(55.6% 0.109 89)
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 #596FB3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.031
- Flat Blue #3C73A8 ΔE 0.039
- Windows Blue #3778BF ΔE 0.040
- Dull Blue #49759C ΔE 0.048
- Muted Blue #3B719F ΔE 0.049
- Mid Blue #276AB3 ΔE 0.054
- Steel Blue #4682B4 ΔE 0.054
- Stormy Blue #507B9C ΔE 0.057
Use #596FB3 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.