#55859F
Closest named color: Dusty Blue (#5A86AD). oklch(59.3% 0.066 233.1), rgb(85, 133, 159).
Aa
Black text reads best on this color (5.24:1).
About this color
#55859F is a medium-dark, muted blue. In OKLCH its lightness is 59%, its chroma 0.066 and its hue 233°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Blue (#5A86AD), ΔE 0.023 away. Black text reads best on it, at 5.24:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | muted (0.066) |
| Temperature | cool |
| Nearest name | Dusty Blue (#5A86AD) |
| Black text | 5.24:1 |
| White text | 4.00:1 |
Values
| HEX | #55859F |
| RGB | rgb(85, 133, 159) |
| HSL | hsl(201, 30%, 48%) |
| OKLCH | oklch(59.3% 0.066 233.1) |
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 #55859F | 4.00:1 | AA large text | Lc -72.8 | Content text, not long reading |
| Black text on #55859F | 5.24:1 | AA | Lc 36.8 | Non-text elements, placeholder text |
| #55859F text on white | 4.00:1 | AA large text | Lc 67.3 | Content text, not long reading |
| #55859F text on black | 5.24:1 | AA | Lc -34.4 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E5EBEF
oklch(93.7% 0.008 236.6)
-
Step 200
200
#CFDBE2
oklch(88.4% 0.016 233)
-
Step 300
300
#AFC4D1
oklch(80.9% 0.029 234.9)
-
Step 400
400
#84A6BA
oklch(70.7% 0.047 234.1)
-
Step 500
500
#6490A8
oklch(63% 0.06 232.8)
-
Step 600
600 (this color)
#55859F
oklch(59.3% 0.066 233.1)
-
Step 700
700
#3B677E
oklch(49.2% 0.061 232.7)
-
Step 800
800
#315466
oklch(42.7% 0.05 232)
-
Step 900
900
#2C4553
oklch(37.6% 0.039 233.8)
-
Step 950
950
#1A2931
oklch(27.1% 0.025 232.2)
#55859F 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) | #7984A0 | 0.044 |
| Deuteranopia (no green cones) | #6E7B9F | 0.039 |
| Tritanopia (no blue cones) | #348C8D | 0.050 |
| Achromatopsia (no color) | #7F7F7F | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #55859F
#55859F
oklch(59.3% 0.066 233.1)
- #9D7359
#9D7359
oklch(59.1% 0.065 52.8)
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 #55859F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Blue #5A86AD ΔE 0.023
- Off Blue #5684AE ΔE 0.025
- Stormy Blue #507B9C ΔE 0.030
- Grey Blue #647D8E ΔE 0.031
- Cerulean #457B9D ΔE 0.036
- Slate Gray #708090 ΔE 0.037
- Steel #738595 ΔE 0.038
- Steel Blue #4682B4 ΔE 0.038
Use #55859F 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.