#596D9E
Closest named color: Dull Blue (#49759C). oklch(53.9% 0.081 266.7), rgb(89, 109, 158).
Aa
White text reads best on this color (5.11:1).
About this color
#596D9E is a medium-dark, moderately saturated blue. In OKLCH its lightness is 54%, its chroma 0.081 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Dull Blue (#49759C), ΔE 0.029 away. White text reads best on it, at 5.11:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.081) |
| Temperature | cool |
| Nearest name | Dull Blue (#49759C) |
| Black text | 4.10:1 |
| White text | 5.11:1 |
Values
| HEX | #596D9E |
| RGB | rgb(89, 109, 158) |
| HSL | hsl(223, 28%, 48%) |
| OKLCH | oklch(53.9% 0.081 266.7) |
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 #596D9E | 5.11:1 | AA | Lc -80.6 | Fine for body text |
| Black text on #596D9E | 4.10:1 | AA large text | Lc 28.9 | Dividers and decoration only |
| #596D9E text on white | 5.11:1 | AA | Lc 75.2 | Fine for body text |
| #596D9E text on black | 4.10:1 | AA large text | Lc -26.5 | 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
#E7EAF1
oklch(93.7% 0.01 267.4)
-
Step 200
200
#D3D9E7
oklch(88.5% 0.02 267.3)
-
Step 300
300
#B6C1D9
oklch(81% 0.036 265.9)
-
Step 400
400
#90A0C6
oklch(70.7% 0.059 267)
-
Step 500
500
#7588B7
oklch(63% 0.075 267.3)
-
Step 600
600 (this color)
#596D9E
oklch(53.9% 0.081 266.7)
-
Step 700
700
#4D5F8C
oklch(49% 0.076 267)
-
Step 800
800
#3F4E71
oklch(42.7% 0.062 266.1)
-
Step 900
900
#36415C
oklch(37.8% 0.049 267)
-
Step 950
950
#202636
oklch(27% 0.031 268.4)
#596D9E 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) | #5C71A0 | 0.012 |
| Deuteranopia (no green cones) | #556B9D | 0.008 |
| Tritanopia (no blue cones) | #41777E | 0.073 |
| Achromatopsia (no color) | #6E6E6E | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #596D9E
#596D9E
oklch(53.9% 0.081 266.7)
- #836B33
#836B33
oklch(53.9% 0.08 86.3)
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 #596D9E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Blue #49759C ΔE 0.029
- Muted Blue #3B719F ΔE 0.034
- Flat Blue #3C73A8 ΔE 0.035
- French Blue #436BAD ΔE 0.036
- Metallic Blue #4F738E ΔE 0.037
- Stormy Blue #507B9C ΔE 0.042
- Cerulean #457B9D ΔE 0.044
- Dusky Blue #475F94 ΔE 0.050
Use #596D9E 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.