#57647C
Closest named color: Slate (#516572). oklch(50.2% 0.042 262.6), rgb(87, 100, 124).
Aa
White text reads best on this color (5.96:1).
About this color
#57647C is a medium-dark, muted blue. In OKLCH its lightness is 50%, its chroma 0.042 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Slate (#516572), ΔE 0.020 away. White text reads best on it, at 5.96:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | muted (0.042) |
| Temperature | cool |
| Nearest name | Slate (#516572) |
| Black text | 3.51:1 |
| White text | 5.96:1 |
Values
| HEX | #57647C |
| RGB | rgb(87, 100, 124) |
| HSL | hsl(219, 18%, 41%) |
| OKLCH | oklch(50.2% 0.042 262.6) |
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 #57647C | 5.96:1 | AA | Lc -85.0 | Fine for body text |
| Black text on #57647C | 3.51:1 | AA large text | Lc 24.2 | Dividers and decoration only |
| #57647C text on white | 5.96:1 | AA | Lc 79.8 | Fine for body text |
| #57647C text on black | 3.51:1 | AA large text | Lc -22.0 | 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
#E8EAEE
oklch(93.7% 0.006 264.5)
-
Step 200
200
#D5D9E1
oklch(88.5% 0.012 264.5)
-
Step 300
300
#BAC1CE
oklch(80.9% 0.02 263)
-
Step 400
400
#96A1B5
oklch(70.7% 0.032 262.5)
-
Step 500
500
#7C8AA3
oklch(63.1% 0.041 262)
-
Step 600
600
#65748E
oklch(55.6% 0.044 261.4)
-
Step 700
700 (this color)
#57647C
oklch(50.2% 0.042 262.6)
-
Step 800
800
#454F62
oklch(42.6% 0.034 263.2)
-
Step 900
900
#3A4250
oklch(37.7% 0.026 261.6)
-
Step 950
950
#22272F
oklch(27.1% 0.017 259.8)
#57647C 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) | #5C657D | 0.008 |
| Deuteranopia (no green cones) | #58627B | 0.006 |
| Tritanopia (no blue cones) | #4D696C | 0.037 |
| Achromatopsia (no color) | #636363 | 0.042 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #57647C
#57647C
oklch(50.2% 0.042 262.6)
- #6F6248
#6F6248
oklch(50.1% 0.042 84.4)
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 #57647C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.020
- Dusty Grape #545775 ΔE 0.038
- Denim #3B638C ΔE 0.043
- YInMn Blue #415A77 ΔE 0.045
- Metallic Blue #4F738E ΔE 0.045
- Dim Gray #696969 ΔE 0.046
- Dusky Blue #475F94 ΔE 0.050
- Dusk #4E5481 ΔE 0.054
Use #57647C 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.