#557E7C
Closest named color: Battleship Grey (#6B7C85). oklch(56.2% 0.046 192.1), rgb(85, 126, 124).
Aa
Black text reads best on this color (4.66:1).
About this color
#557E7C is a medium-dark, muted teal or cyan. In OKLCH its lightness is 56%, its chroma 0.046 and its hue 192°. Its hue sits on the cool side of the wheel. The nearest named color is Battleship Grey (#6B7C85), ΔE 0.033 away. Black text reads best on it, at 4.66:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (56%) |
| Chroma | muted (0.046) |
| Temperature | cool |
| Nearest name | Battleship Grey (#6B7C85) |
| Black text | 4.66:1 |
| White text | 4.50:1 |
Values
| HEX | #557E7C |
| RGB | rgb(85, 126, 124) |
| HSL | hsl(177, 19%, 41%) |
| OKLCH | oklch(56.2% 0.046 192.1) |
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 #557E7C | 4.50:1 | AA | Lc -76.7 | Fine for body text |
| Black text on #557E7C | 4.66:1 | AA | Lc 32.9 | Non-text elements, placeholder text |
| #557E7C text on white | 4.50:1 | AA | Lc 71.2 | Content text, not long reading |
| #557E7C text on black | 4.66:1 | AA | Lc -30.4 | 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
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E6EBEB
oklch(93.6% 0.005 197.1)
-
Step 200
200
#D1DCDB
oklch(88.6% 0.012 190.4)
-
Step 300
300
#B2C5C4
oklch(80.9% 0.021 192.9)
-
Step 400
400
#8AA7A6
oklch(70.6% 0.032 193.9)
-
Step 500
500
#6C9290
oklch(63.1% 0.042 192.1)
-
Step 600
600 (this color)
#557E7C
oklch(56.2% 0.046 192.1)
-
Step 700
700
#436967
oklch(49.2% 0.043 191.6)
-
Step 800
800
#385554
oklch(42.6% 0.035 193.2)
-
Step 900
900
#304645
oklch(37.6% 0.027 192.5)
-
Step 950
950
#1D2929
oklch(27% 0.017 196.2)
#557E7C 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) | #797A7C | 0.048 |
| Deuteranopia (no green cones) | #72747C | 0.046 |
| Tritanopia (no blue cones) | #46807D | 0.016 |
| Achromatopsia (no color) | #777777 | 0.046 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #557E7C
#557E7C
oklch(56.2% 0.046 192.1)
- #8E6A6E
#8E6A6E
oklch(56.2% 0.046 11.2)
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 #557E7C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Battleship Grey #6B7C85 ΔE 0.033
- Grey Blue #647D8E ΔE 0.036
- Battleship Gray #6C757D ΔE 0.038
- Steel Grey #6F828A ΔE 0.042
- Slate Gray #708090 ΔE 0.049
- Teal #008080 ΔE 0.051
- Metallic Blue #4F738E ΔE 0.051
- Dusty Teal #4C9085 ΔE 0.051
Use #557E7C 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.