#557D6F
Closest named color: Battleship Grey (#6B7C85). oklch(55.6% 0.05 170.6), rgb(85, 125, 111).
Aa
White text reads best on this color (4.61:1).
About this color
#557D6F is a medium-dark, muted teal or cyan. In OKLCH its lightness is 56%, its chroma 0.050 and its hue 171°. Its hue sits on the cool side of the wheel. The nearest named color is Battleship Grey (#6B7C85), ΔE 0.048 away. White text reads best on it, at 4.61:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (56%) |
| Chroma | muted (0.050) |
| Temperature | cool |
| Nearest name | Battleship Grey (#6B7C85) |
| Black text | 4.54:1 |
| White text | 4.61:1 |
Values
| HEX | #557D6F |
| RGB | rgb(85, 125, 111) |
| HSL | hsl(159, 19%, 41%) |
| OKLCH | oklch(55.6% 0.05 170.6) |
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 #557D6F | 4.61:1 | AA | Lc -77.5 | Fine for body text |
| Black text on #557D6F | 4.54:1 | AA | Lc 32.1 | Non-text elements, placeholder text |
| #557D6F text on white | 4.61:1 | AA | Lc 72.0 | Content text, not long reading |
| #557D6F text on black | 4.54:1 | AA | Lc -29.7 | 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
#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
#B3C6BE
oklch(81% 0.024 168.6)
-
Step 400
400
#8BA89D
oklch(70.6% 0.036 170.3)
-
Step 500
500
#6E9385
oklch(63.1% 0.046 169.6)
-
Step 600
600 (this color)
#557D6F
oklch(55.6% 0.05 170.6)
-
Step 700
700
#456A5D
oklch(49.2% 0.047 170.3)
-
Step 800
800
#39564C
oklch(42.7% 0.039 170.9)
-
Step 900
900
#31473F
oklch(37.7% 0.031 170.1)
-
Step 950
950
#1D2A25
oklch(27.1% 0.02 169.2)
#557D6F 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) | #7B786E | 0.052 |
| Deuteranopia (no green cones) | #747370 | 0.049 |
| Tritanopia (no blue cones) | #4B7E79 | 0.017 |
| Achromatopsia (no color) | #757575 | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #557D6F
#557D6F
oklch(55.6% 0.05 170.6)
- #8B6777
#8B6777
oklch(55.5% 0.051 350.5)
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 #557D6F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Battleship Grey #6B7C85 ΔE 0.048
- Battleship Gray #6C757D ΔE 0.048
- Dark Sage #598556 ΔE 0.050
- Teal #008080 ΔE 0.053
- Grey Blue #647D8E ΔE 0.054
- Slate Green #658D6D ΔE 0.055
- Dusty Teal #4C9085 ΔE 0.055
- Steel Grey #6F828A ΔE 0.056
Use #557D6F 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.