#557F73
Closest named color: Battleship Grey (#6B7C85). oklch(56.2% 0.05 174.6), rgb(85, 127, 115).
Aa
Black text reads best on this color (4.66:1).
About this color
#557F73 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 56%, its chroma 0.050 and its hue 175°. Its hue sits on the cool side of the wheel. The nearest named color is Battleship Grey (#6B7C85), ΔE 0.044 away. Black text reads best on it, at 4.66:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (56%) |
| Chroma | muted (0.050) |
| Temperature | cool |
| Nearest name | Battleship Grey (#6B7C85) |
| Black text | 4.66:1 |
| White text | 4.49:1 |
Values
| HEX | #557F73 |
| RGB | rgb(85, 127, 115) |
| HSL | hsl(163, 20%, 42%) |
| OKLCH | oklch(56.2% 0.05 174.6) |
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 #557F73 | 4.49:1 | AA large text | Lc -76.6 | Fine for body text |
| Black text on #557F73 | 4.66:1 | AA | Lc 32.9 | Non-text elements, placeholder text |
| #557F73 text on white | 4.49:1 | AA large text | Lc 71.2 | Content text, not long reading |
| #557F73 text on black | 4.66:1 | AA | Lc -30.5 | Non-text elements, placeholder text |
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
#F3F6F5
oklch(97.1% 0.003 174.5)
-
Step 100
100
#E6EBE9
oklch(93.6% 0.006 170.4)
-
Step 200
200
#D1DCD8
oklch(88.5% 0.013 172.3)
-
Step 300
300
#B2C6BF
oklch(80.9% 0.024 172.7)
-
Step 400
400
#8AA89F
oklch(70.6% 0.036 175.1)
-
Step 500
500
#6C9388
oklch(63.1% 0.046 175.5)
-
Step 600
600 (this color)
#557F73
oklch(56.2% 0.05 174.6)
-
Step 700
700
#446A5F
oklch(49.2% 0.047 174.1)
-
Step 800
800
#38564E
oklch(42.7% 0.038 175.9)
-
Step 900
900
#314740
oklch(37.7% 0.03 172.9)
-
Step 950
950
#1D2A26
oklch(27.2% 0.019 173.9)
#557F73 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) | #7C7A72 | 0.052 |
| Deuteranopia (no green cones) | #757574 | 0.050 |
| Tritanopia (no blue cones) | #49807B | 0.016 |
| Achromatopsia (no color) | #777777 | 0.051 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #557F73
#557F73
oklch(56.2% 0.05 174.6)
- #8E6977
#8E6977
oklch(56.3% 0.051 354.3)
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 #557F73, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Battleship Grey #6B7C85 ΔE 0.044
- Battleship Gray #6C757D ΔE 0.048
- Dusty Teal #4C9085 ΔE 0.049
- Grey Blue #647D8E ΔE 0.050
- Steel Grey #6F828A ΔE 0.051
- Dark Sage #598556 ΔE 0.051
- Slate Green #658D6D ΔE 0.051
- Teal #008080 ΔE 0.052
Use #557F73 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.