#525BC4
Closest named color: Iris (#6258C4). oklch(52.1% 0.162 275.6), rgb(82, 91, 196).
Aa
White text reads best on this color (5.74:1).
About this color
#525BC4 is a medium-dark, vivid blue. In OKLCH its lightness is 52%, its chroma 0.162 and its hue 276°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.023 away. White text reads best on it, at 5.74:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.162) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.65:1 |
| White text | 5.74:1 |
Values
| HEX | #525BC4 |
| RGB | rgb(82, 91, 196) |
| HSL | hsl(235, 49%, 55%) |
| OKLCH | oklch(52.1% 0.162 275.6) |
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 #525BC4 | 5.74:1 | AA | Lc -83.7 | Fine for body text |
| Black text on #525BC4 | 3.65:1 | AA large text | Lc 25.6 | Dividers and decoration only |
| #525BC4 text on white | 5.74:1 | AA | Lc 78.5 | Fine for body text |
| #525BC4 text on black | 3.65:1 | AA large text | Lc -23.3 | 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
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E5E9F9
oklch(93.6% 0.022 274.7)
-
Step 200
200
#D1D7F7
oklch(88.5% 0.044 277.1)
-
Step 300
300
#B2BDF4
oklch(80.9% 0.079 275.7)
-
Step 400
400
#8B99EE
oklch(70.7% 0.125 275.6)
-
Step 500
500
#707DE8
oklch(63% 0.16 275.6)
-
Step 600
600
#5A64D7
oklch(55.7% 0.174 275.5)
-
Step 700
700 (this color)
#525BC4
oklch(52.1% 0.162 275.6)
-
Step 800
800
#3D4497
oklch(42.8% 0.134 275.5)
-
Step 900
900
#333A78
oklch(37.7% 0.105 275.3)
-
Step 950
950
#1E2246
oklch(26.9% 0.066 276.2)
#525BC4 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) | #196BC8 | 0.058 |
| Deuteranopia (no green cones) | #0061C2 | 0.060 |
| Tritanopia (no blue cones) | #007387 | 0.141 |
| Achromatopsia (no color) | #666666 | 0.162 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #525BC4
#525BC4
oklch(52.1% 0.162 275.6)
- #7C6800
#7C6800
oklch(52.1% 0.107 95.8)
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 #525BC4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.023
- Dark Periwinkle #665FD1 ΔE 0.037
- Slate Blue #6A5ACD ΔE 0.038
- Warm Blue #4B57DB ΔE 0.039
- Light Indigo #6D5ACF ΔE 0.044
- Royal Blue #4169E1 ΔE 0.055
- Bluey Purple #6241C7 ΔE 0.060
- French Blue #436BAD ΔE 0.061
Use #525BC4 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.