#557F74
Closest named color: Battleship Grey (#6B7C85). oklch(56.2% 0.05 176.2), rgb(85, 127, 116).
Aa
Black text reads best on this color (4.67:1).
About this color
#557F74 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 56%, its chroma 0.050 and its hue 176°. Its hue sits on the cool side of the wheel. The nearest named color is Battleship Grey (#6B7C85), ΔE 0.043 away. Black text reads best on it, at 4.67:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (56%) |
| Chroma | muted (0.050) |
| Temperature | cool |
| Nearest name | Battleship Grey (#6B7C85) |
| Black text | 4.67:1 |
| White text | 4.49:1 |
Values
| HEX | #557F74 |
| RGB | rgb(85, 127, 116) |
| HSL | hsl(164, 20%, 42%) |
| OKLCH | oklch(56.2% 0.05 176.2) |
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 #557F74 | 4.49:1 | AA large text | Lc -76.6 | Fine for body text |
| Black text on #557F74 | 4.67:1 | AA | Lc 32.9 | Non-text elements, placeholder text |
| #557F74 text on white | 4.49:1 | AA large text | Lc 71.1 | Content text, not long reading |
| #557F74 text on black | 4.67:1 | 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
#E6EBEA
oklch(93.6% 0.006 183)
-
Step 200
200
#D1DCD9
oklch(88.5% 0.013 178)
-
Step 300
300
#B2C6C0
oklch(81% 0.023 175.8)
-
Step 400
400
#8AA8A0
oklch(70.7% 0.035 177.3)
-
Step 500
500
#6C9388
oklch(63.1% 0.046 175.5)
-
Step 600
600 (this color)
#557F74
oklch(56.2% 0.05 176.2)
-
Step 700
700
#436A60
oklch(49.2% 0.047 176.3)
-
Step 800
800
#38564E
oklch(42.7% 0.038 175.9)
-
Step 900
900
#304741
oklch(37.7% 0.03 176.6)
-
Step 950
950
#1D2A26
oklch(27.2% 0.019 173.9)
#557F74 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) | #7C7A74 | 0.053 |
| Deuteranopia (no green cones) | #747575 | 0.049 |
| Tritanopia (no blue cones) | #49807C | 0.016 |
| Achromatopsia (no color) | #777777 | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #557F74
#557F74
oklch(56.2% 0.05 176.2)
- #8E6976
#8E6976
oklch(56.2% 0.051 356)
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 #557F74, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Battleship Grey #6B7C85 ΔE 0.043
- Battleship Gray #6C757D ΔE 0.047
- Grey Blue #647D8E ΔE 0.049
- Dusty Teal #4C9085 ΔE 0.049
- Steel Grey #6F828A ΔE 0.050
- Teal #008080 ΔE 0.052
- Slate Green #658D6D ΔE 0.052
- Dark Sage #598556 ΔE 0.053
Use #557F74 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.