#55858D
Closest named color: Grey Blue (#647D8E). oklch(58.5% 0.053 209.1), rgb(85, 133, 141).
Aa
Black text reads best on this color (5.12:1).
About this color
#55858D is a medium-dark, muted teal or cyan. In OKLCH its lightness is 59%, its chroma 0.053 and its hue 209°. Its hue sits on the cool side of the wheel. The nearest named color is Grey Blue (#647D8E), ΔE 0.028 away. Black text reads best on it, at 5.12:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (59%) |
| Chroma | muted (0.053) |
| Temperature | cool |
| Nearest name | Grey Blue (#647D8E) |
| Black text | 5.12:1 |
| White text | 4.09:1 |
Values
| HEX | #55858D |
| RGB | rgb(85, 133, 141) |
| HSL | hsl(189, 25%, 44%) |
| OKLCH | oklch(58.5% 0.053 209.1) |
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 #55858D | 4.09:1 | AA large text | Lc -73.6 | Content text, not long reading |
| Black text on #55858D | 5.12:1 | AA | Lc 36.0 | Non-text elements, placeholder text |
| #55858D text on white | 4.09:1 | AA large text | Lc 68.1 | Content text, not long reading |
| #55858D text on black | 5.12:1 | AA | Lc -33.6 | 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
#E5EBEC
oklch(93.6% 0.007 208.8)
-
Step 200
200
#D0DCDE
oklch(88.6% 0.013 208.8)
-
Step 300
300
#B0C5C9
oklch(80.9% 0.024 210.4)
-
Step 400
400
#85A8AD
oklch(70.7% 0.039 207)
-
Step 500
500
#669299
oklch(63.1% 0.049 208.4)
-
Step 600
600 (this color)
#55858D
oklch(58.5% 0.053 209.1)
-
Step 700
700
#3D6970
oklch(49.2% 0.05 208.6)
-
Step 800
800
#33555B
oklch(42.6% 0.041 209.9)
-
Step 900
900
#2D464B
oklch(37.6% 0.032 211.5)
-
Step 950
950
#1B292C
oklch(27% 0.02 212.4)
#55858D 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) | #7D818E | 0.051 |
| Deuteranopia (no green cones) | #747A8D | 0.048 |
| Tritanopia (no blue cones) | #3E8987 | 0.028 |
| Achromatopsia (no color) | #7D7D7D | 0.053 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #55858D
#55858D
oklch(58.5% 0.053 209.1)
- #99706A
#99706A
oklch(58.5% 0.053 28.2)
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 #55858D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grey Blue #647D8E ΔE 0.028
- Steel Grey #6F828A ΔE 0.031
- Battleship Grey #6B7C85 ΔE 0.033
- Slate Gray #708090 ΔE 0.036
- Dusty Teal #4C9085 ΔE 0.039
- Steel #738595 ΔE 0.040
- Stormy Blue #507B9C ΔE 0.044
- Cerulean #457B9D ΔE 0.048
Use #55858D 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.