#57707B
Closest named color: Metallic Blue (#4F738E). oklch(52.9% 0.034 226.6), rgb(87, 112, 123).
Aa
White text reads best on this color (5.23:1).
About this color
#57707B is a medium-dark, muted teal or cyan. In OKLCH its lightness is 53%, its chroma 0.034 and its hue 227°. Its hue sits on the cool side of the wheel. The nearest named color is Metallic Blue (#4F738E), ΔE 0.029 away. White text reads best on it, at 5.23:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (53%) |
| Chroma | muted (0.034) |
| Temperature | cool |
| Nearest name | Metallic Blue (#4F738E) |
| Black text | 4.00:1 |
| White text | 5.23:1 |
Values
| HEX | #57707B |
| RGB | rgb(87, 112, 123) |
| HSL | hsl(198, 17%, 41%) |
| OKLCH | oklch(52.9% 0.034 226.6) |
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 #57707B | 5.23:1 | AA | Lc -81.3 | Fine for body text |
| Black text on #57707B | 4.00:1 | AA large text | Lc 28.1 | Dividers and decoration only |
| #57707B text on white | 5.23:1 | AA | Lc 76.0 | Fine for body text |
| #57707B text on black | 4.00:1 | AA large text | Lc -25.7 | 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
#F4F6F6
oklch(97.2% 0.002 197.1)
-
Step 100
100
#E7EAEC
oklch(93.5% 0.004 236.5)
-
Step 200
200
#D4DADD
oklch(88.5% 0.008 228.9)
-
Step 300
300
#B7C3C8
oklch(80.9% 0.015 224.5)
-
Step 400
400
#91A4AD
oklch(70.7% 0.025 227.9)
-
Step 500
500
#768E98
oklch(63.1% 0.031 225)
-
Step 600
600 (this color)
#57707B
oklch(52.9% 0.034 226.6)
-
Step 700
700
#4E656F
oklch(49.2% 0.032 226.3)
-
Step 800
800
#40525A
oklch(42.6% 0.026 226.8)
-
Step 900
900
#36444A
oklch(37.7% 0.021 225.8)
-
Step 950
950
#20282B
oklch(27% 0.013 222.5)
#57707B 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) | #6A6F7C | 0.026 |
| Deuteranopia (no green cones) | #656A7B | 0.025 |
| Tritanopia (no blue cones) | #4C7373 | 0.023 |
| Achromatopsia (no color) | #6C6C6C | 0.034 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #57707B
#57707B
oklch(52.9% 0.034 226.6)
- #7D665B
#7D665B
oklch(53% 0.034 47)
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 #57707B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Metallic Blue #4F738E ΔE 0.029
- Battleship Gray #6C757D ΔE 0.034
- Slate #516572 ΔE 0.035
- Dim Gray #696969 ΔE 0.035
- Battleship Grey #6B7C85 ΔE 0.047
- Grey Blue #647D8E ΔE 0.048
- Dull Blue #49759C ΔE 0.051
- Stormy Blue #507B9C ΔE 0.052
Use #57707B 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.