#5557A6
Closest named color: Dusky Blue (#475F94). oklch(49.5% 0.124 279.8), rgb(85, 87, 166).
Aa
White text reads best on this color (6.36:1).
About this color
#5557A6 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 49%, its chroma 0.124 and its hue 280°. Its hue sits on the cool side of the wheel. The nearest named color is Dusky Blue (#475F94), ΔE 0.044 away. White text reads best on it, at 6.36:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.124) |
| Temperature | cool |
| Nearest name | Dusky Blue (#475F94) |
| Black text | 3.30:1 |
| White text | 6.36:1 |
Values
| HEX | #5557A6 |
| RGB | rgb(85, 87, 166) |
| HSL | hsl(239, 32%, 49%) |
| OKLCH | oklch(49.5% 0.124 279.8) |
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 #5557A6 | 6.36:1 | AA | Lc -86.6 | Fine for body text |
| Black text on #5557A6 | 3.30:1 | AA large text | Lc 22.6 | Dividers and decoration only |
| #5557A6 text on white | 6.36:1 | AA | Lc 81.5 | Fine for body text |
| #5557A6 text on black | 3.30:1 | AA large text | Lc -20.4 | 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 700.
-
Step 50
50
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E7E9F6
oklch(93.6% 0.018 279.1)
-
Step 200
200
#D4D7EF
oklch(88.4% 0.033 280)
-
Step 300
300
#B8BDE7
oklch(80.9% 0.059 279.7)
-
Step 400
400
#949ADC
oklch(70.7% 0.097 279.6)
-
Step 500
500
#7B80D2
oklch(63.1% 0.122 279.6)
-
Step 600
600
#6568BF
oklch(55.6% 0.133 279.7)
-
Step 700
700 (this color)
#5557A6
oklch(49.5% 0.124 279.8)
-
Step 800
800
#454786
oklch(42.8% 0.103 279.8)
-
Step 900
900
#3A3C6B
oklch(37.8% 0.08 280)
-
Step 950
950
#22233F
oklch(27% 0.052 280.8)
#5557A6 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) | #3562A9 | 0.045 |
| Deuteranopia (no green cones) | #2F5CA4 | 0.046 |
| Tritanopia (no blue cones) | #376876 | 0.109 |
| Achromatopsia (no color) | #5F5F5F | 0.124 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5557A6
#5557A6
oklch(49.5% 0.124 279.8)
- #706200
#706200
oklch(49.4% 0.103 99.5)
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 #5557A6, closest first.
No curated palette has a color within ΔE 0.04 of #5557A6.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusky Blue #475F94 ΔE 0.044
- Twilight #4E518B ΔE 0.046
- Denim Blue #3B5B92 ΔE 0.050
- Iris #6258C4 ΔE 0.052
- French Blue #436BAD ΔE 0.055
- Dusk #4E5481 ΔE 0.061
- Mid Blue #276AB3 ΔE 0.065
- Denim #3B638C ΔE 0.067
Use #5557A6 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.