#557079
Closest named color: Metallic Blue (#4F738E). oklch(52.7% 0.035 220.3), rgb(85, 112, 121).
Aa
White text reads best on this color (5.27:1).
About this color
#557079 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 53%, its chroma 0.035 and its hue 220°. Its hue sits on the cool side of the wheel. The nearest named color is Metallic Blue (#4F738E), ΔE 0.032 away. White text reads best on it, at 5.27:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (53%) |
| Chroma | muted (0.035) |
| Temperature | cool |
| Nearest name | Metallic Blue (#4F738E) |
| Black text | 3.98:1 |
| White text | 5.27:1 |
Values
| HEX | #557079 |
| RGB | rgb(85, 112, 121) |
| HSL | hsl(195, 17%, 40%) |
| OKLCH | oklch(52.7% 0.035 220.3) |
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 #557079 | 5.27:1 | AA | Lc -81.6 | Fine for body text |
| Black text on #557079 | 3.98:1 | AA large text | Lc 27.9 | Dividers and decoration only |
| #557079 text on white | 5.27:1 | AA | Lc 76.2 | Fine for body text |
| #557079 text on black | 3.98:1 | AA large text | Lc -25.5 | 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
#E7EAEC
oklch(93.5% 0.004 236.5)
-
Step 200
200
#D3DADD
oklch(88.4% 0.009 225.1)
-
Step 300
300
#B6C3C8
oklch(80.9% 0.016 222.7)
-
Step 400
400
#90A5AB
oklch(70.8% 0.025 216.8)
-
Step 500
500
#758E97
oklch(63% 0.032 221.7)
-
Step 600
600 (this color)
#557079
oklch(52.7% 0.035 220.3)
-
Step 700
700
#4D656D
oklch(49% 0.031 220.3)
-
Step 800
800
#3F5359
oklch(42.8% 0.027 218.1)
-
Step 900
900
#364449
oklch(37.6% 0.02 221.6)
-
Step 950
950
#20282B
oklch(27% 0.013 222.5)
#557079 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) | #6A6E7A | 0.029 |
| Deuteranopia (no green cones) | #656A79 | 0.027 |
| Tritanopia (no blue cones) | #497373 | 0.021 |
| Achromatopsia (no color) | #6C6C6C | 0.035 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #557079
#557079
oklch(52.7% 0.035 220.3)
- #7D655C
#7D655C
oklch(52.8% 0.034 41.6)
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 #557079, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Metallic Blue #4F738E ΔE 0.032
- Slate #516572 ΔE 0.033
- Dim Gray #696969 ΔE 0.035
- Battleship Gray #6C757D ΔE 0.037
- Battleship Grey #6B7C85 ΔE 0.050
- Grey Blue #647D8E ΔE 0.051
- Dull Blue #49759C ΔE 0.054
- Stormy Blue #507B9C ΔE 0.055
Use #557079 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.