#55679F
Closest named color: French Blue (#436BAD). oklch(52.4% 0.091 269.5), rgb(85, 103, 159).
Aa
White text reads best on this color (5.48:1).
About this color
#55679F is a medium-dark, moderately saturated blue. In OKLCH its lightness is 52%, its chroma 0.091 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.029 away. White text reads best on it, at 5.48:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.091) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 3.82:1 |
| White text | 5.48:1 |
Values
| HEX | #55679F |
| RGB | rgb(85, 103, 159) |
| HSL | hsl(225, 30%, 48%) |
| OKLCH | oklch(52.4% 0.091 269.5) |
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 #55679F | 5.48:1 | AA | Lc -82.6 | Fine for body text |
| Black text on #55679F | 3.82:1 | AA large text | Lc 26.8 | Dividers and decoration only |
| #55679F text on white | 5.48:1 | AA | Lc 77.3 | Fine for body text |
| #55679F text on black | 3.82:1 | AA large text | Lc -24.4 | 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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E6EAF2
oklch(93.6% 0.012 264.5)
-
Step 200
200
#D3D9E9
oklch(88.6% 0.023 269.4)
-
Step 300
300
#B6C0DC
oklch(80.9% 0.041 269.9)
-
Step 400
400
#909FCA
oklch(70.6% 0.065 269.7)
-
Step 500
500
#7587BD
oklch(63.1% 0.084 269.7)
-
Step 600
600 (this color)
#55679F
oklch(52.4% 0.091 269.5)
-
Step 700
700
#4D5E91
oklch(49.1% 0.085 269.1)
-
Step 800
800
#404D76
oklch(42.8% 0.07 269.9)
-
Step 900
900
#36405F
oklch(37.7% 0.055 269.9)
-
Step 950
950
#202638
oklch(27.1% 0.035 269.8)
#55679F 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) | #536DA1 | 0.017 |
| Deuteranopia (no green cones) | #4B669E | 0.014 |
| Tritanopia (no blue cones) | #3A737B | 0.083 |
| Achromatopsia (no color) | #696969 | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #55679F
#55679F
oklch(52.4% 0.091 269.5)
- #7F6722
#7F6722
oklch(52.4% 0.091 89.3)
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 #55679F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.029
- Dusky Blue #475F94 ΔE 0.034
- Muted Blue #3B719F ΔE 0.038
- Flat Blue #3C73A8 ΔE 0.040
- Dull Blue #49759C ΔE 0.043
- Denim #3B638C ΔE 0.047
- Metallic Blue #4F738E ΔE 0.050
- Mid Blue #276AB3 ΔE 0.052
Use #55679F 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.