#52579C
Closest named color: Twilight (#4E518B). oklch(48.6% 0.11 278.3), rgb(82, 87, 156).
Aa
White text reads best on this color (6.55:1).
About this color
#52579C is a medium-dark, moderately saturated blue. In OKLCH its lightness is 49%, its chroma 0.110 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.031 away. White text reads best on it, at 6.55:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.110) |
| Temperature | cool |
| Nearest name | Twilight (#4E518B) |
| Black text | 3.20:1 |
| White text | 6.55:1 |
Values
| HEX | #52579C |
| RGB | rgb(82, 87, 156) |
| HSL | hsl(236, 31%, 47%) |
| OKLCH | oklch(48.6% 0.11 278.3) |
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 #52579C | 6.55:1 | AA | Lc -87.4 | Fine for body text |
| Black text on #52579C | 3.20:1 | AA large text | Lc 21.7 | Dividers and decoration only |
| #52579C text on white | 6.55:1 | AA | Lc 82.3 | Fine for body text |
| #52579C text on black | 3.20:1 | AA large text | Lc -19.6 | 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
#D4D8ED
oklch(88.6% 0.029 277.2)
-
Step 300
300
#B8BEE3
oklch(80.9% 0.053 277.9)
-
Step 400
400
#949CD5
oklch(70.8% 0.084 277.9)
-
Step 500
500
#7B82CA
oklch(63.1% 0.108 278.6)
-
Step 600
600
#646AB7
oklch(55.5% 0.119 278.4)
-
Step 700
700 (this color)
#52579C
oklch(48.6% 0.11 278.3)
-
Step 800
800
#444980
oklch(42.8% 0.091 277.9)
-
Step 900
900
#393D67
oklch(37.7% 0.072 278.2)
-
Step 950
950
#21243C
oklch(27% 0.045 277.5)
#52579C 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) | #3C609F | 0.034 |
| Deuteranopia (no green cones) | #365B9A | 0.036 |
| Tritanopia (no blue cones) | #386572 | 0.095 |
| Achromatopsia (no color) | #5D5D5D | 0.110 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #52579C
#52579C
oklch(48.6% 0.11 278.3)
- #6E5F00
#6E5F00
oklch(48.5% 0.1 98.5)
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 #52579C, closest first.
No curated palette has a color within ΔE 0.04 of #52579C.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.031
- Dusky Blue #475F94 ΔE 0.031
- Denim Blue #3B5B92 ΔE 0.036
- Dusk #4E5481 ΔE 0.044
- Denim #3B638C ΔE 0.054
- French Blue #436BAD ΔE 0.057
- Light Navy Blue #2E5A88 ΔE 0.057
- Dusk Blue #26538D ΔE 0.061
Use #52579C 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.