#596A7B
Closest named color: Slate (#516572). oklch(51.7% 0.034 248.5), rgb(89, 106, 123).
Aa
White text reads best on this color (5.56:1).
About this color
#596A7B is a medium-dark, muted blue. In OKLCH its lightness is 52%, its chroma 0.034 and its hue 248°. Its hue sits on the cool side of the wheel. The nearest named color is Slate (#516572), ΔE 0.022 away. White text reads best on it, at 5.56:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | muted (0.034) |
| Temperature | cool |
| Nearest name | Slate (#516572) |
| Black text | 3.77:1 |
| White text | 5.56:1 |
Values
| HEX | #596A7B |
| RGB | rgb(89, 106, 123) |
| HSL | hsl(210, 16%, 42%) |
| OKLCH | oklch(51.7% 0.034 248.5) |
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 #596A7B | 5.56:1 | AA | Lc -83.1 | Fine for body text |
| Black text on #596A7B | 3.77:1 | AA large text | Lc 26.2 | Dividers and decoration only |
| #596A7B text on white | 5.56:1 | AA | Lc 77.8 | Fine for body text |
| #596A7B text on black | 3.77:1 | AA large text | Lc -24.0 | 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 700.
-
Step 50
50
#F4F5F7
oklch(97% 0.003 264.5)
-
Step 100
100
#E7EAED
oklch(93.6% 0.005 247.9)
-
Step 200
200
#D5DADF
oklch(88.6% 0.009 247.9)
-
Step 300
300
#B9C2CB
oklch(81% 0.016 248)
-
Step 400
400
#94A2B1
oklch(70.6% 0.027 250.1)
-
Step 500
500
#7A8C9D
oklch(63.2% 0.033 246.8)
-
Step 600
600
#637688
oklch(55.7% 0.036 247)
-
Step 700
700 (this color)
#596A7B
oklch(51.7% 0.034 248.5)
-
Step 800
800
#43515E
oklch(42.8% 0.028 246.5)
-
Step 900
900
#39434D
oklch(37.8% 0.022 248.4)
-
Step 950
950
#21272D
oklch(26.9% 0.014 248.4)
#596A7B 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) | #646A7C | 0.016 |
| Deuteranopia (no green cones) | #5F677B | 0.012 |
| Tritanopia (no blue cones) | #4F6E6F | 0.030 |
| Achromatopsia (no color) | #686868 | 0.034 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #596A7B
#596A7B
oklch(51.7% 0.034 248.5)
- #756553
#756553
oklch(51.7% 0.034 70.3)
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 #596A7B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.022
- Metallic Blue #4F738E ΔE 0.034
- Dim Gray #696969 ΔE 0.034
- Battleship Gray #6C757D ΔE 0.045
- Dull Blue #49759C ΔE 0.054
- Denim #3B638C ΔE 0.054
- Dusty Grape #545775 ΔE 0.057
- Grey Blue #647D8E ΔE 0.060
Use #596A7B 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.