#596FBB
Closest named color: French Blue (#436BAD). oklch(56% 0.121 270), rgb(89, 111, 187).
Aa
White text reads best on this color (4.75:1).
About this color
#596FBB is a medium-dark, moderately saturated blue. In OKLCH its lightness is 56%, its chroma 0.121 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.037 away. White text reads best on it, at 4.75:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.121) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 4.41:1 |
| White text | 4.75:1 |
Values
| HEX | #596FBB |
| RGB | rgb(89, 111, 187) |
| HSL | hsl(227, 42%, 54%) |
| OKLCH | oklch(56% 0.121 270) |
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 #596FBB | 4.75:1 | AA | Lc -78.3 | Fine for body text |
| Black text on #596FBB | 4.41:1 | AA large text | Lc 31.2 | Non-text elements, placeholder text |
| #596FBB text on white | 4.75:1 | AA | Lc 72.9 | Content text, not long reading |
| #596FBB text on black | 4.41:1 | AA large text | Lc -28.8 | 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
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E6EAF5
oklch(93.7% 0.015 270)
-
Step 200
200
#D1D9EE
oklch(88.6% 0.03 269.1)
-
Step 300
300
#B3C0E5
oklch(81% 0.054 269.9)
-
Step 400
400
#8B9ED8
oklch(70.7% 0.088 270.1)
-
Step 500
500
#6F85CD
oklch(63% 0.112 270.1)
-
Step 600
600 (this color)
#596FBB
oklch(56% 0.121 270)
-
Step 700
700
#485CA0
oklch(49.2% 0.112 269.6)
-
Step 800
800
#3B4B82
oklch(42.7% 0.094 269.9)
-
Step 900
900
#333F68
oklch(37.7% 0.072 270.3)
-
Step 950
950
#1E253D
oklch(27% 0.046 270.7)
#596FBB 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) | #5077BE | 0.022 |
| Deuteranopia (no green cones) | #456FB9 | 0.024 |
| Tritanopia (no blue cones) | #2B7F8C | 0.107 |
| Achromatopsia (no color) | #737373 | 0.121 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #596FBB
#596FBB
oklch(56% 0.121 270)
- #8E7000
#8E7000
oklch(55.9% 0.114 90)
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 #596FBB, closest first.
No curated palette has a color within ΔE 0.04 of #596FBB.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.037
- Windows Blue #3778BF ΔE 0.038
- Flat Blue #3C73A8 ΔE 0.047
- Mid Blue #276AB3 ΔE 0.055
- Steel Blue #4682B4 ΔE 0.058
- Muted Blue #3B719F ΔE 0.058
- Dark Periwinkle #665FD1 ΔE 0.058
- Dull Blue #49759C ΔE 0.059
Use #596FBB 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.