#596F8B
Closest named color: Metallic Blue (#4F738E). oklch(53.5% 0.051 254.7), rgb(89, 111, 139).
Aa
White text reads best on this color (5.15:1).
About this color
#596F8B is a medium-dark, muted blue. In OKLCH its lightness is 53%, its chroma 0.051 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Metallic Blue (#4F738E), ΔE 0.015 away. White text reads best on it, at 5.15:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | muted (0.051) |
| Temperature | cool |
| Nearest name | Metallic Blue (#4F738E) |
| Black text | 4.07:1 |
| White text | 5.15:1 |
Values
| HEX | #596F8B |
| RGB | rgb(89, 111, 139) |
| HSL | hsl(214, 22%, 45%) |
| OKLCH | oklch(53.5% 0.051 254.7) |
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 #596F8B | 5.15:1 | AA | Lc -80.9 | Fine for body text |
| Black text on #596F8B | 4.07:1 | AA large text | Lc 28.6 | Dividers and decoration only |
| #596F8B text on white | 5.15:1 | AA | Lc 75.5 | Fine for body text |
| #596F8B text on black | 4.07:1 | AA large text | Lc -26.2 | 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
#F4F5F7
oklch(97% 0.003 264.5)
-
Step 100
100
#E7EAEE
oklch(93.6% 0.006 255.5)
-
Step 200
200
#D3DAE2
oklch(88.5% 0.013 251.6)
-
Step 300
300
#B7C2D0
oklch(81% 0.023 254.4)
-
Step 400
400
#91A2B8
oklch(70.6% 0.038 254.9)
-
Step 500
500
#768BA6
oklch(63% 0.048 254.8)
-
Step 600
600 (this color)
#596F8B
oklch(53.5% 0.051 254.7)
-
Step 700
700
#4E627C
oklch(49% 0.049 255.2)
-
Step 800
800
#405065
oklch(42.6% 0.041 255.4)
-
Step 900
900
#374352
oklch(37.8% 0.03 254.2)
-
Step 950
950
#202730
oklch(27% 0.02 254.8)
#596F8B 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) | #65708C | 0.017 |
| Deuteranopia (no green cones) | #5F6B8A | 0.013 |
| Tritanopia (no blue cones) | #497578 | 0.045 |
| Achromatopsia (no color) | #6D6D6D | 0.051 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #596F8B
#596F8B
oklch(53.5% 0.051 254.7)
- #7F694C
#7F694C
oklch(53.5% 0.051 74.1)
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 #596F8B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Metallic Blue #4F738E ΔE 0.015
- Dull Blue #49759C ΔE 0.031
- Stormy Blue #507B9C ΔE 0.038
- Cerulean #457B9D ΔE 0.041
- Battleship Gray #6C757D ΔE 0.042
- Muted Blue #3B719F ΔE 0.043
- Grey Blue #647D8E ΔE 0.045
- Slate #516572 ΔE 0.046
Use #596F8B 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.