#55859D
Closest named color: Dusty Blue (#5A86AD). oklch(59.2% 0.064 231), rgb(85, 133, 157).
Aa
Black text reads best on this color (5.22:1).
About this color
#55859D is a medium-dark, muted blue. In OKLCH its lightness is 59%, its chroma 0.064 and its hue 231°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Blue (#5A86AD), ΔE 0.026 away. Black text reads best on it, at 5.22:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | muted (0.064) |
| Temperature | cool |
| Nearest name | Dusty Blue (#5A86AD) |
| Black text | 5.22:1 |
| White text | 4.01:1 |
Values
| HEX | #55859D |
| RGB | rgb(85, 133, 157) |
| HSL | hsl(200, 30%, 47%) |
| OKLCH | oklch(59.2% 0.064 231) |
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 #55859D | 4.01:1 | AA large text | Lc -72.9 | Content text, not long reading |
| Black text on #55859D | 5.22:1 | AA | Lc 36.7 | Non-text elements, placeholder text |
| #55859D text on white | 4.01:1 | AA large text | Lc 67.4 | Content text, not long reading |
| #55859D text on black | 5.22:1 | AA | Lc -34.3 | 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
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E5EBEE
oklch(93.6% 0.008 228.9)
-
Step 200
200
#CFDBE2
oklch(88.4% 0.016 233)
-
Step 300
300
#AFC4D0
oklch(80.8% 0.029 232.8)
-
Step 400
400
#84A6B8
oklch(70.6% 0.046 231.3)
-
Step 500
500
#6490A7
oklch(63% 0.059 231.7)
-
Step 600
600 (this color)
#55859D
oklch(59.2% 0.064 231)
-
Step 700
700
#3B677C
oklch(49.1% 0.059 230.3)
-
Step 800
800
#325465
oklch(42.7% 0.049 231.2)
-
Step 900
900
#2C4552
oklch(37.6% 0.038 231.8)
-
Step 950
950
#1A2930
oklch(27.1% 0.024 228.7)
#55859D 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) | #79839E | 0.045 |
| Deuteranopia (no green cones) | #6F7B9D | 0.040 |
| Tritanopia (no blue cones) | #358C8D | 0.047 |
| Achromatopsia (no color) | #7F7F7F | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #55859D
#55859D
oklch(59.2% 0.064 231)
- #9D735B
#9D735B
oklch(59.2% 0.064 50.8)
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 #55859D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Blue #5A86AD ΔE 0.026
- Off Blue #5684AE ΔE 0.028
- Grey Blue #647D8E ΔE 0.030
- Stormy Blue #507B9C ΔE 0.031
- Slate Gray #708090 ΔE 0.035
- Cerulean #457B9D ΔE 0.036
- Steel #738595 ΔE 0.037
- Steel Grey #6F828A ΔE 0.039
Use #55859D 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.