#557377
Closest named color: Battleship Gray (#6C757D). oklch(53.4% 0.035 206.4), rgb(85, 115, 119).
Aa
White text reads best on this color (5.11:1).
About this color
#557377 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 53%, its chroma 0.035 and its hue 206°. Its hue sits on the cool side of the wheel. The nearest named color is Battleship Gray (#6C757D), ΔE 0.034 away. White text reads best on it, at 5.11:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (53%) |
| Chroma | muted (0.035) |
| Temperature | cool |
| Nearest name | Battleship Gray (#6C757D) |
| Black text | 4.10:1 |
| White text | 5.11:1 |
Values
| HEX | #557377 |
| RGB | rgb(85, 115, 119) |
| HSL | hsl(187, 17%, 40%) |
| OKLCH | oklch(53.4% 0.035 206.4) |
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 #557377 | 5.11:1 | AA | Lc -80.6 | Fine for body text |
| Black text on #557377 | 4.10:1 | AA large text | Lc 28.8 | Dividers and decoration only |
| #557377 text on white | 5.11:1 | AA | Lc 75.3 | Fine for body text |
| #557377 text on black | 4.10:1 | AA large text | Lc -26.5 | 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
#E6EBEB
oklch(93.6% 0.005 197.1)
-
Step 200
200
#D3DBDC
oklch(88.6% 0.009 205.9)
-
Step 300
300
#B6C4C6
oklch(81% 0.016 207.1)
-
Step 400
400
#8FA5A8
oklch(70.6% 0.025 206.6)
-
Step 500
500
#738F93
oklch(63% 0.032 207)
-
Step 600
600 (this color)
#557377
oklch(53.4% 0.035 206.4)
-
Step 700
700
#4B666A
oklch(49% 0.032 207.5)
-
Step 800
800
#3E5356
oklch(42.6% 0.026 207.1)
-
Step 900
900
#354547
oklch(37.7% 0.021 205.7)
-
Step 950
950
#1F282A
oklch(26.9% 0.013 212.7)
#557377 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) | #6E7077 | 0.035 |
| Deuteranopia (no green cones) | #686C77 | 0.032 |
| Tritanopia (no blue cones) | #4A7674 | 0.017 |
| Achromatopsia (no color) | #6E6E6E | 0.035 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #557377
#557377
oklch(53.4% 0.035 206.4)
- #806562
#806562
oklch(53.3% 0.035 25.7)
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 #557377, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Battleship Gray #6C757D ΔE 0.034
- Metallic Blue #4F738E ΔE 0.037
- Dim Gray #696969 ΔE 0.037
- Slate #516572 ΔE 0.042
- Battleship Grey #6B7C85 ΔE 0.045
- Grey Blue #647D8E ΔE 0.047
- Deep Aqua #08787F ΔE 0.053
- Stormy Blue #507B9C ΔE 0.056
Use #557377 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.