#596E8D
Closest named color: Metallic Blue (#4F738E). oklch(53.4% 0.055 258), rgb(89, 110, 141).
Aa
White text reads best on this color (5.19:1).
About this color
#596E8D is a medium-dark, muted blue. In OKLCH its lightness is 53%, its chroma 0.055 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Metallic Blue (#4F738E), ΔE 0.018 away. White text reads best on it, at 5.19:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | muted (0.055) |
| Temperature | cool |
| Nearest name | Metallic Blue (#4F738E) |
| Black text | 4.03:1 |
| White text | 5.19:1 |
Values
| HEX | #596E8D |
| RGB | rgb(89, 110, 141) |
| HSL | hsl(216, 23%, 45%) |
| OKLCH | oklch(53.4% 0.055 258) |
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 #596E8D | 5.19:1 | AA | Lc -81.1 | Fine for body text |
| Black text on #596E8D | 4.03:1 | AA large text | Lc 28.3 | Dividers and decoration only |
| #596E8D text on white | 5.19:1 | AA | Lc 75.7 | Fine for body text |
| #596E8D text on black | 4.03:1 | AA large text | Lc -26.0 | 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
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E7EAEF
oklch(93.6% 0.007 260.7)
-
Step 200
200
#D4DAE2
oklch(88.6% 0.013 255.5)
-
Step 300
300
#B7C1D1
oklch(80.8% 0.025 259.8)
-
Step 400
400
#92A2BA
oklch(70.8% 0.04 258.4)
-
Step 500
500
#778BA9
oklch(63.2% 0.051 258.4)
-
Step 600
600 (this color)
#596E8D
oklch(53.4% 0.055 258)
-
Step 700
700
#4F627E
oklch(49.2% 0.051 258)
-
Step 800
800
#415066
oklch(42.8% 0.041 257.9)
-
Step 900
900
#374253
oklch(37.6% 0.033 259)
-
Step 950
950
#202731
oklch(27% 0.021 257.3)
#596E8D 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) | #636F8E | 0.014 |
| Deuteranopia (no green cones) | #5D6A8C | 0.012 |
| Tritanopia (no blue cones) | #497578 | 0.050 |
| Achromatopsia (no color) | #6D6D6D | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #596E8D
#596E8D
oklch(53.4% 0.055 258)
- #7F6948
#7F6948
oklch(53.4% 0.055 77.3)
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 #596E8D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Metallic Blue #4F738E ΔE 0.018
- Dull Blue #49759C ΔE 0.030
- Stormy Blue #507B9C ΔE 0.039
- Muted Blue #3B719F ΔE 0.040
- Cerulean #457B9D ΔE 0.042
- Battleship Gray #6C757D ΔE 0.046
- Slate #516572 ΔE 0.047
- Grey Blue #647D8E ΔE 0.048
Use #596E8D 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.