#525DA1
Closest named color: Dusky Blue (#475F94). oklch(50.2% 0.109 274.9), rgb(82, 93, 161).
Aa
White text reads best on this color (6.10:1).
About this color
#525DA1 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 50%, its chroma 0.109 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Dusky Blue (#475F94), ΔE 0.027 away. White text reads best on it, at 6.10:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.109) |
| Temperature | cool |
| Nearest name | Dusky Blue (#475F94) |
| Black text | 3.43:1 |
| White text | 6.10:1 |
Values
| HEX | #525DA1 |
| RGB | rgb(82, 93, 161) |
| HSL | hsl(232, 33%, 48%) |
| OKLCH | oklch(50.2% 0.109 274.9) |
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 #525DA1 | 6.10:1 | AA | Lc -85.5 | Fine for body text |
| Black text on #525DA1 | 3.43:1 | AA large text | Lc 23.7 | Dividers and decoration only |
| #525DA1 text on white | 6.10:1 | AA | Lc 80.4 | Fine for body text |
| #525DA1 text on black | 3.43:1 | AA large text | Lc -21.5 | 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
#D3D8ED
oklch(88.5% 0.029 275.1)
-
Step 300
300
#B6BFE3
oklch(81% 0.052 274.2)
-
Step 400
400
#919DD5
oklch(70.7% 0.083 274.7)
-
Step 500
500
#7684CA
oklch(63.1% 0.107 274.3)
-
Step 600
600
#606CB7
oklch(55.6% 0.117 275.1)
-
Step 700
700 (this color)
#525DA1
oklch(50.2% 0.109 274.9)
-
Step 800
800
#414A80
oklch(42.8% 0.09 274.8)
-
Step 900
900
#373E67
oklch(37.8% 0.071 275.1)
-
Step 950
950
#20243C
oklch(26.9% 0.045 275.7)
#525DA1 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) | #4265A4 | 0.027 |
| Deuteranopia (no green cones) | #3B5F9F | 0.029 |
| Tritanopia (no blue cones) | #346B77 | 0.096 |
| Achromatopsia (no color) | #626262 | 0.109 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #525DA1
#525DA1
oklch(50.2% 0.109 274.9)
- #766200
#766200
oklch(50.1% 0.103 95)
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 #525DA1, closest first.
No curated palette has a color within ΔE 0.04 of #525DA1.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusky Blue #475F94 ΔE 0.027
- Denim Blue #3B5B92 ΔE 0.040
- French Blue #436BAD ΔE 0.041
- Twilight #4E518B ΔE 0.045
- Denim #3B638C ΔE 0.050
- Dusk #4E5481 ΔE 0.054
- Mid Blue #276AB3 ΔE 0.054
- Muted Blue #3B719F ΔE 0.060
Use #525DA1 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.