#56599C
Closest named color: Dusky Blue (#475F94). oklch(49.3% 0.106 279.8), rgb(86, 89, 156).
Aa
White text reads best on this color (6.35:1).
About this color
#56599C is a medium-dark, moderately saturated blue. In OKLCH its lightness is 49%, its chroma 0.106 and its hue 280°. Its hue sits on the cool side of the wheel. The nearest named color is Dusky Blue (#475F94), ΔE 0.030 away. White text reads best on it, at 6.35:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.106) |
| Temperature | cool |
| Nearest name | Dusky Blue (#475F94) |
| Black text | 3.30:1 |
| White text | 6.35:1 |
Values
| HEX | #56599C |
| RGB | rgb(86, 89, 156) |
| HSL | hsl(237, 29%, 47%) |
| OKLCH | oklch(49.3% 0.106 279.8) |
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 #56599C | 6.35:1 | AA | Lc -86.6 | Fine for body text |
| Black text on #56599C | 3.30:1 | AA large text | Lc 22.6 | Dividers and decoration only |
| #56599C text on white | 6.35:1 | AA | Lc 81.5 | Fine for body text |
| #56599C 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
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E7E9F4
oklch(93.6% 0.015 277.8)
-
Step 200
200
#D5D8EC
oklch(88.6% 0.028 279)
-
Step 300
300
#B9BEE2
oklch(80.9% 0.051 279)
-
Step 400
400
#969BD3
oklch(70.6% 0.082 280.1)
-
Step 500
500
#7D82C8
oklch(63.1% 0.105 279.8)
-
Step 600
600
#676AB4
oklch(55.5% 0.114 280.2)
-
Step 700
700 (this color)
#56599C
oklch(49.3% 0.106 279.8)
-
Step 800
800
#46497E
oklch(42.8% 0.087 279.6)
-
Step 900
900
#3A3D65
oklch(37.6% 0.068 279.3)
-
Step 950
950
#22243B
oklch(27% 0.043 279.3)
#56599C 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) | #40629F | 0.035 |
| Deuteranopia (no green cones) | #3B5D9A | 0.036 |
| Tritanopia (no blue cones) | #3F6773 | 0.093 |
| Achromatopsia (no color) | #5F5F5F | 0.106 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #56599C
#56599C
oklch(49.3% 0.106 279.8)
- #6F6200
#6F6200
oklch(49.3% 0.103 100.3)
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 #56599C, closest first.
No curated palette has a color within ΔE 0.04 of #56599C.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusky Blue #475F94 ΔE 0.030
- Twilight #4E518B ΔE 0.036
- Denim Blue #3B5B92 ΔE 0.040
- Dusk #4E5481 ΔE 0.046
- French Blue #436BAD ΔE 0.054
- Denim #3B638C ΔE 0.054
- Light Navy Blue #2E5A88 ΔE 0.061
- Dusty Grape #545775 ΔE 0.063
Use #56599C 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.