#55737E
Closest named color: Metallic Blue (#4F738E). oklch(53.6% 0.039 222.5), rgb(85, 115, 126).
Aa
White text reads best on this color (5.07:1).
About this color
#55737E is a medium-dark, muted teal or cyan. In OKLCH its lightness is 54%, its chroma 0.039 and its hue 222°. Its hue sits on the cool side of the wheel. The nearest named color is Metallic Blue (#4F738E), ΔE 0.026 away. White text reads best on it, at 5.07:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (54%) |
| Chroma | muted (0.039) |
| Temperature | cool |
| Nearest name | Metallic Blue (#4F738E) |
| Black text | 4.13:1 |
| White text | 5.07:1 |
Values
| HEX | #55737E |
| RGB | rgb(85, 115, 126) |
| HSL | hsl(196, 19%, 41%) |
| OKLCH | oklch(53.6% 0.039 222.5) |
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 #55737E | 5.07:1 | AA | Lc -80.4 | Fine for body text |
| Black text on #55737E | 4.13:1 | AA large text | Lc 29.1 | Dividers and decoration only |
| #55737E text on white | 5.07:1 | AA | Lc 75.0 | Fine for body text |
| #55737E text on black | 4.13:1 | AA large text | Lc -26.7 | 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
#F4F6F6
oklch(97.2% 0.002 197.1)
-
Step 100
100
#E6EBEC
oklch(93.7% 0.006 211)
-
Step 200
200
#D3DBDE
oklch(88.6% 0.01 222.1)
-
Step 300
300
#B5C3C9
oklch(80.8% 0.018 225.2)
-
Step 400
400
#8FA5AD
oklch(70.8% 0.027 221.7)
-
Step 500
500
#728F99
oklch(63.1% 0.036 220.9)
-
Step 600
600 (this color)
#55737E
oklch(53.6% 0.039 222.5)
-
Step 700
700
#4A6670
oklch(49.2% 0.037 222)
-
Step 800
800
#3D535B
oklch(42.7% 0.03 222.3)
-
Step 900
900
#34454B
oklch(37.8% 0.024 221.5)
-
Step 950
950
#1F282C
oklch(27% 0.015 226.6)
#55737E 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) | #6D717F | 0.033 |
| Deuteranopia (no green cones) | #666C7E | 0.029 |
| Tritanopia (no blue cones) | #477776 | 0.026 |
| Achromatopsia (no color) | #6E6E6E | 0.039 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #55737E
#55737E
oklch(53.6% 0.039 222.5)
- #82675C
#82675C
oklch(53.7% 0.039 43.3)
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 #55737E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Metallic Blue #4F738E ΔE 0.026
- Battleship Gray #6C757D ΔE 0.032
- Grey Blue #647D8E ΔE 0.041
- Dim Gray #696969 ΔE 0.042
- Battleship Grey #6B7C85 ΔE 0.042
- Slate #516572 ΔE 0.043
- Stormy Blue #507B9C ΔE 0.046
- Dull Blue #49759C ΔE 0.047
Use #55737E 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.