#5B757B
Closest named color: Battleship Gray (#6C757D). oklch(54.4% 0.032 213.4), rgb(91, 117, 123).
Aa
White text reads best on this color (4.91:1).
About this color
#5B757B is a medium-dark, muted teal or cyan. In OKLCH its lightness is 54%, its chroma 0.032 and its hue 213°. Its hue sits on the cool side of the wheel. The nearest named color is Battleship Gray (#6C757D), ΔE 0.024 away. White text reads best on it, at 4.91:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (54%) |
| Chroma | muted (0.032) |
| Temperature | cool |
| Nearest name | Battleship Gray (#6C757D) |
| Black text | 4.27:1 |
| White text | 4.91:1 |
Values
| HEX | #5B757B |
| RGB | rgb(91, 117, 123) |
| HSL | hsl(191, 15%, 42%) |
| OKLCH | oklch(54.4% 0.032 213.4) |
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 #5B757B | 4.91:1 | AA | Lc -79.4 | Fine for body text |
| Black text on #5B757B | 4.27:1 | AA large text | Lc 30.1 | Non-text elements, placeholder text |
| #5B757B text on white | 4.91:1 | AA | Lc 74.0 | Content text, not long reading |
| #5B757B text on black | 4.27:1 | AA large text | Lc -27.7 | 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
#E7EAEB
oklch(93.5% 0.004 219.5)
-
Step 200
200
#D4DADC
oklch(88.4% 0.007 219.6)
-
Step 300
300
#B7C3C6
oklch(80.9% 0.014 214.4)
-
Step 400
400
#91A5A9
oklch(70.8% 0.023 211.1)
-
Step 500
500
#768E94
oklch(63% 0.029 214.6)
-
Step 600
600 (this color)
#5B757B
oklch(54.4% 0.032 213.4)
-
Step 700
700
#4E656B
oklch(49% 0.029 215.4)
-
Step 800
800
#405357
oklch(42.8% 0.024 211.9)
-
Step 900
900
#364448
oklch(37.6% 0.019 217)
-
Step 950
950
#20282A
oklch(27% 0.012 214.5)
#5B757B 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) | #70737B | 0.029 |
| Deuteranopia (no green cones) | #6B6F7B | 0.027 |
| Tritanopia (no blue cones) | #517877 | 0.017 |
| Achromatopsia (no color) | #717171 | 0.032 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B757B
#5B757B
oklch(54.4% 0.032 213.4)
- #816A64
#816A64
oklch(54.5% 0.031 35)
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 #5B757B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Battleship Gray #6C757D ΔE 0.024
- Battleship Grey #6B7C85 ΔE 0.033
- Metallic Blue #4F738E ΔE 0.035
- Grey Blue #647D8E ΔE 0.036
- Dim Gray #696969 ΔE 0.039
- Stormy Blue #507B9C ΔE 0.050
- Slate #516572 ΔE 0.050
- Steel Grey #6F828A ΔE 0.051
Use #5B757B 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.