#59637B
Closest named color: Slate (#516572). oklch(50% 0.04 267.2), rgb(89, 99, 123).
Aa
White text reads best on this color (6.00:1).
About this color
#59637B is a medium-dark, muted blue. In OKLCH its lightness is 50%, its chroma 0.040 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Slate (#516572), ΔE 0.021 away. White text reads best on it, at 6.00:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | muted (0.040) |
| Temperature | cool |
| Nearest name | Slate (#516572) |
| Black text | 3.49:1 |
| White text | 6.00:1 |
Values
| HEX | #59637B |
| RGB | rgb(89, 99, 123) |
| HSL | hsl(222, 16%, 42%) |
| OKLCH | oklch(50% 0.04 267.2) |
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 #59637B | 6.00:1 | AA | Lc -85.2 | Fine for body text |
| Black text on #59637B | 3.49:1 | AA large text | Lc 24.0 | Dividers and decoration only |
| #59637B text on white | 6.00:1 | AA | Lc 80.0 | Fine for body text |
| #59637B text on black | 3.49:1 | AA large text | Lc -21.8 | 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
#F5F5F7
oklch(97.1% 0.003 286.4)
-
Step 100
100
#E8EAEE
oklch(93.7% 0.006 264.5)
-
Step 200
200
#D6D9E1
oklch(88.5% 0.011 269.5)
-
Step 300
300
#BBC1CE
oklch(81% 0.019 266)
-
Step 400
400
#98A0B5
oklch(70.6% 0.032 269)
-
Step 500
500
#7F89A2
oklch(63.1% 0.039 268.1)
-
Step 600
600
#68738D
oklch(55.6% 0.043 267)
-
Step 700
700 (this color)
#59637B
oklch(50% 0.04 267.2)
-
Step 800
800
#474F62
oklch(42.8% 0.033 267.1)
-
Step 900
900
#3B4150
oklch(37.6% 0.027 268)
-
Step 950
950
#23262F
oklch(26.9% 0.017 270.7)
#59637B 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) | #5C657C | 0.008 |
| Deuteranopia (no green cones) | #59627A | 0.003 |
| Tritanopia (no blue cones) | #50686B | 0.037 |
| Achromatopsia (no color) | #636363 | 0.040 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #59637B
#59637B
oklch(50% 0.04 267.2)
- #6D6249
#6D6249
oklch(50% 0.04 87)
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 #59637B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.021
- Dusty Grape #545775 ΔE 0.036
- Denim #3B638C ΔE 0.045
- YInMn Blue #415A77 ΔE 0.045
- Dim Gray #696969 ΔE 0.045
- Metallic Blue #4F738E ΔE 0.048
- Dusky Blue #475F94 ΔE 0.051
- Dusk #4E5481 ΔE 0.053
Use #59637B 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.