#57707F
Closest named color: Metallic Blue (#4F738E). oklch(53.1% 0.038 234.8), rgb(87, 112, 127).
Aa
White text reads best on this color (5.21:1).
About this color
#57707F is a medium-dark, muted blue. In OKLCH its lightness is 53%, its chroma 0.038 and its hue 235°. Its hue sits on the cool side of the wheel. The nearest named color is Metallic Blue (#4F738E), ΔE 0.024 away. White text reads best on it, at 5.21:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | muted (0.038) |
| Temperature | cool |
| Nearest name | Metallic Blue (#4F738E) |
| Black text | 4.02:1 |
| White text | 5.21:1 |
Values
| HEX | #57707F |
| RGB | rgb(87, 112, 127) |
| HSL | hsl(203, 19%, 42%) |
| OKLCH | oklch(53.1% 0.038 234.8) |
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 #57707F | 5.21:1 | AA | Lc -81.2 | Fine for body text |
| Black text on #57707F | 4.02:1 | AA large text | Lc 28.2 | Dividers and decoration only |
| #57707F text on white | 5.21:1 | AA | Lc 75.8 | Fine for body text |
| #57707F text on black | 4.02:1 | AA large text | Lc -25.9 | 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
#E7EAED
oklch(93.6% 0.005 247.9)
-
Step 200
200
#D3DADE
oklch(88.4% 0.009 232.4)
-
Step 300
300
#B7C3CA
oklch(81% 0.017 233.1)
-
Step 400
400
#91A4AF
oklch(70.7% 0.027 233.2)
-
Step 500
500
#768D9C
oklch(63.1% 0.035 236.7)
-
Step 600
600 (this color)
#57707F
oklch(53.1% 0.038 234.8)
-
Step 700
700
#4D6472
oklch(49% 0.036 235.2)
-
Step 800
800
#40525D
oklch(42.8% 0.029 235.2)
-
Step 900
900
#36444C
oklch(37.8% 0.023 233.2)
-
Step 950
950
#20282D
oklch(27.1% 0.015 235.5)
#57707F 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) | #696F80 | 0.025 |
| Deuteranopia (no green cones) | #636B7F | 0.021 |
| Tritanopia (no blue cones) | #4A7475 | 0.028 |
| Achromatopsia (no color) | #6D6D6D | 0.038 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #57707F
#57707F
oklch(53.1% 0.038 234.8)
- #7E6758
#7E6758
oklch(53.2% 0.037 54.9)
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 #57707F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Metallic Blue #4F738E ΔE 0.024
- Battleship Gray #6C757D ΔE 0.034
- Slate #516572 ΔE 0.036
- Dim Gray #696969 ΔE 0.039
- Dull Blue #49759C ΔE 0.045
- Grey Blue #647D8E ΔE 0.045
- Battleship Grey #6B7C85 ΔE 0.047
- Stormy Blue #507B9C ΔE 0.048
Use #57707F 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.