#596F9F
Closest named color: Dull Blue (#49759C). oklch(54.4% 0.08 265), rgb(89, 111, 159).
Aa
White text reads best on this color (5.00:1).
About this color
#596F9F is a medium-dark, moderately saturated blue. In OKLCH its lightness is 54%, its chroma 0.080 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Dull Blue (#49759C), ΔE 0.026 away. White text reads best on it, at 5.00:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.080) |
| Temperature | cool |
| Nearest name | Dull Blue (#49759C) |
| Black text | 4.19:1 |
| White text | 5.00:1 |
Values
| HEX | #596F9F |
| RGB | rgb(89, 111, 159) |
| HSL | hsl(221, 28%, 49%) |
| OKLCH | oklch(54.4% 0.08 265) |
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 #596F9F | 5.00:1 | AA | Lc -79.9 | Fine for body text |
| Black text on #596F9F | 4.19:1 | AA large text | Lc 29.6 | Dividers and decoration only |
| #596F9F text on white | 5.00:1 | AA | Lc 74.5 | Content text, not long reading |
| #596F9F text on black | 4.19:1 | AA large text | Lc -27.2 | 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 600.
-
Step 50
50
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E6EAF1
oklch(93.6% 0.01 261.8)
-
Step 200
200
#D3D9E7
oklch(88.5% 0.02 267.3)
-
Step 300
300
#B5C1D9
oklch(80.9% 0.036 264.3)
-
Step 400
400
#8FA1C5
oklch(70.8% 0.057 264.1)
-
Step 500
500
#7489B7
oklch(63.1% 0.074 265.4)
-
Step 600
600 (this color)
#596F9F
oklch(54.4% 0.08 265)
-
Step 700
700
#4C608B
oklch(49.1% 0.074 264.7)
-
Step 800
800
#3E4E71
oklch(42.6% 0.062 265.1)
-
Step 900
900
#35415B
oklch(37.6% 0.048 265.1)
-
Step 950
950
#1F2636
oklch(26.9% 0.032 266.1)
#596F9F 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) | #5E73A1 | 0.014 |
| Deuteranopia (no green cones) | #576C9E | 0.009 |
| Tritanopia (no blue cones) | #407980 | 0.072 |
| Achromatopsia (no color) | #6F6F6F | 0.080 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #596F9F
#596F9F
oklch(54.4% 0.08 265)
- #856C35
#856C35
oklch(54.4% 0.08 85.1)
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 #596F9F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Blue #49759C ΔE 0.026
- Flat Blue #3C73A8 ΔE 0.033
- Muted Blue #3B719F ΔE 0.033
- Metallic Blue #4F738E ΔE 0.035
- Stormy Blue #507B9C ΔE 0.037
- French Blue #436BAD ΔE 0.038
- Cerulean #457B9D ΔE 0.040
- Dusky Blue #475F94 ΔE 0.055
Use #596F9F 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.