#55709F
Closest named color: Dull Blue (#49759C). oklch(54.4% 0.081 261.1), rgb(85, 112, 159).
Aa
White text reads best on this color (4.99:1).
About this color
#55709F is a medium-dark, moderately saturated blue. In OKLCH its lightness is 54%, its chroma 0.081 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Dull Blue (#49759C), ΔE 0.020 away. White text reads best on it, at 4.99:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.081) |
| Temperature | cool |
| Nearest name | Dull Blue (#49759C) |
| Black text | 4.20:1 |
| White text | 4.99:1 |
Values
| HEX | #55709F |
| RGB | rgb(85, 112, 159) |
| HSL | hsl(218, 30%, 48%) |
| OKLCH | oklch(54.4% 0.081 261.1) |
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 #55709F | 4.99:1 | AA | Lc -79.9 | Fine for body text |
| Black text on #55709F | 4.20:1 | AA large text | Lc 29.6 | Dividers and decoration only |
| #55709F text on white | 4.99:1 | AA | Lc 74.5 | Content text, not long reading |
| #55709F text on black | 4.20:1 | AA large text | Lc -27.2 | 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
#E6EAF1
oklch(93.6% 0.01 261.8)
-
Step 200
200
#D2DAE7
oklch(88.6% 0.02 260.2)
-
Step 300
300
#B4C1D9
oklch(80.9% 0.037 262.8)
-
Step 400
400
#8CA1C5
oklch(70.6% 0.058 261.1)
-
Step 500
500
#708AB7
oklch(63.1% 0.075 261.2)
-
Step 600
600 (this color)
#55709F
oklch(54.4% 0.081 261.1)
-
Step 700
700
#48618B
oklch(49.1% 0.074 260.5)
-
Step 800
800
#3C4F71
oklch(42.7% 0.062 261.6)
-
Step 900
900
#33425B
oklch(37.7% 0.047 260.4)
-
Step 950
950
#1E2736
oklch(27.1% 0.031 260.5)
#55709F 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) | #5F73A1 | 0.017 |
| Deuteranopia (no green cones) | #566C9E | 0.011 |
| Tritanopia (no blue cones) | #387A81 | 0.071 |
| Achromatopsia (no color) | #6F6F6F | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #55709F
#55709F
oklch(54.4% 0.081 261.1)
- #886B35
#886B35
oklch(54.5% 0.081 81.2)
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 #55709F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Blue #49759C ΔE 0.020
- Muted Blue #3B719F ΔE 0.028
- Flat Blue #3C73A8 ΔE 0.028
- Metallic Blue #4F738E ΔE 0.032
- Stormy Blue #507B9C ΔE 0.034
- Cerulean #457B9D ΔE 0.036
- French Blue #436BAD ΔE 0.036
- Steel Blue #4682B4 ΔE 0.053
Use #55709F 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.