#55759D
Closest named color: Dull Blue (#49759C). oklch(55.4% 0.073 254.4), rgb(85, 117, 157).
Aa
White text reads best on this color (4.75:1).
About this color
#55759D is a medium-dark, moderately saturated blue. In OKLCH its lightness is 55%, its chroma 0.073 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Dull Blue (#49759C), ΔE 0.014 away. White text reads best on it, at 4.75:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.073) |
| Temperature | cool |
| Nearest name | Dull Blue (#49759C) |
| Black text | 4.41:1 |
| White text | 4.75:1 |
Values
| HEX | #55759D |
| RGB | rgb(85, 117, 157) |
| HSL | hsl(213, 30%, 47%) |
| OKLCH | oklch(55.4% 0.073 254.4) |
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 #55759D | 4.75:1 | AA | Lc -78.4 | Fine for body text |
| Black text on #55759D | 4.41:1 | AA large text | Lc 31.1 | Non-text elements, placeholder text |
| #55759D text on white | 4.75:1 | AA | Lc 72.9 | Content text, not long reading |
| #55759D text on black | 4.41:1 | AA large text | Lc -28.8 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E6EAF0
oklch(93.6% 0.009 258.3)
-
Step 200
200
#D1DAE5
oklch(88.5% 0.018 253.4)
-
Step 300
300
#B3C2D6
oklch(80.9% 0.033 255.6)
-
Step 400
400
#8BA3C1
oklch(70.8% 0.052 254.2)
-
Step 500
500
#6E8CB2
oklch(63.2% 0.067 254.6)
-
Step 600
600 (this color)
#55759D
oklch(55.4% 0.073 254.4)
-
Step 700
700
#466387
oklch(49.2% 0.068 254.3)
-
Step 800
800
#39516D
oklch(42.8% 0.055 252.9)
-
Step 900
900
#314359
oklch(37.7% 0.044 253.8)
-
Step 950
950
#1D2734
oklch(26.9% 0.028 255.2)
#55759D 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) | #66779F | 0.023 |
| Deuteranopia (no green cones) | #5D709C | 0.016 |
| Tritanopia (no blue cones) | #387E83 | 0.064 |
| Achromatopsia (no color) | #737373 | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #55759D
#55759D
oklch(55.4% 0.073 254.4)
- #8C6D40
#8C6D40
oklch(55.5% 0.073 75.6)
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 #55759D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Blue #49759C ΔE 0.014
- Stormy Blue #507B9C ΔE 0.018
- Cerulean #457B9D ΔE 0.023
- Metallic Blue #4F738E ΔE 0.025
- Muted Blue #3B719F ΔE 0.032
- Flat Blue #3C73A8 ΔE 0.032
- Grey Blue #647D8E ΔE 0.043
- Steel Blue #4682B4 ΔE 0.045
Use #55759D 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.