#596F88
Closest named color: Metallic Blue (#4F738E). oklch(53.4% 0.047 251.9), rgb(89, 111, 136).
Aa
White text reads best on this color (5.17:1).
About this color
#596F88 is a medium-dark, muted blue. In OKLCH its lightness is 53%, its chroma 0.047 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Metallic Blue (#4F738E), ΔE 0.016 away. White text reads best on it, at 5.17:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | muted (0.047) |
| Temperature | cool |
| Nearest name | Metallic Blue (#4F738E) |
| Black text | 4.05:1 |
| White text | 5.17:1 |
Values
| HEX | #596F88 |
| RGB | rgb(89, 111, 136) |
| HSL | hsl(212, 21%, 44%) |
| OKLCH | oklch(53.4% 0.047 251.9) |
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 #596F88 | 5.17:1 | AA | Lc -81.0 | Fine for body text |
| Black text on #596F88 | 4.05:1 | AA large text | Lc 28.4 | Dividers and decoration only |
| #596F88 text on white | 5.17:1 | AA | Lc 75.6 | Fine for body text |
| #596F88 text on black | 4.05:1 | AA large text | Lc -26.1 | 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
#F4F6F7
oklch(97.2% 0.003 228.8)
-
Step 100
100
#E7EAEE
oklch(93.6% 0.006 255.5)
-
Step 200
200
#D4DAE1
oklch(88.6% 0.012 252.1)
-
Step 300
300
#B7C2CE
oklch(80.9% 0.021 250.4)
-
Step 400
400
#92A2B6
oklch(70.6% 0.034 254.1)
-
Step 500
500
#778CA4
oklch(63.2% 0.044 251.9)
-
Step 600
600 (this color)
#596F88
oklch(53.4% 0.047 251.9)
-
Step 700
700
#4F6379
oklch(49.2% 0.043 251.1)
-
Step 800
800
#415163
oklch(42.9% 0.036 251.7)
-
Step 900
900
#374351
oklch(37.8% 0.029 252.5)
-
Step 950
950
#20272F
oklch(26.9% 0.018 251.9)
#596F88 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) | #667089 | 0.019 |
| Deuteranopia (no green cones) | #606B87 | 0.014 |
| Tritanopia (no blue cones) | #4A7577 | 0.042 |
| Achromatopsia (no color) | #6D6D6D | 0.047 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #596F88
#596F88
oklch(53.4% 0.047 251.9)
- #7E694E
#7E694E
oklch(53.4% 0.048 73.5)
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 #596F88, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Metallic Blue #4F738E ΔE 0.016
- Dull Blue #49759C ΔE 0.034
- Battleship Gray #6C757D ΔE 0.039
- Stormy Blue #507B9C ΔE 0.040
- Slate #516572 ΔE 0.043
- Cerulean #457B9D ΔE 0.043
- Grey Blue #647D8E ΔE 0.045
- Muted Blue #3B719F ΔE 0.046
Use #596F88 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.