#525BB4
Closest named color: Iris (#6258C4). oklch(51% 0.139 275.9), rgb(82, 91, 180).
Aa
White text reads best on this color (5.97:1).
About this color
#525BB4 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 51%, its chroma 0.139 and its hue 276°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.035 away. White text reads best on it, at 5.97:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.139) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.51:1 |
| White text | 5.97:1 |
Values
| HEX | #525BB4 |
| RGB | rgb(82, 91, 180) |
| HSL | hsl(234, 40%, 51%) |
| OKLCH | oklch(51% 0.139 275.9) |
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 #525BB4 | 5.97:1 | AA | Lc -84.9 | Fine for body text |
| Black text on #525BB4 | 3.51:1 | AA large text | Lc 24.4 | Dividers and decoration only |
| #525BB4 text on white | 5.97:1 | AA | Lc 79.7 | Fine for body text |
| #525BB4 text on black | 3.51:1 | AA large text | Lc -22.2 | 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
#F4F5FC
oklch(97.1% 0.009 279.7)
-
Step 100
100
#E6E9F7
oklch(93.6% 0.019 276.3)
-
Step 200
200
#D2D8F2
oklch(88.6% 0.036 275.3)
-
Step 300
300
#B4BEED
oklch(81% 0.067 275.4)
-
Step 400
400
#8E9BE4
oklch(70.8% 0.108 275.6)
-
Step 500
500
#7480DC
oklch(63.2% 0.138 276.1)
-
Step 600
600
#5D67C9
oklch(55.5% 0.15 276)
-
Step 700
700 (this color)
#525BB4
oklch(51% 0.139 275.9)
-
Step 800
800
#3F468D
oklch(42.6% 0.116 276.1)
-
Step 900
900
#353C70
oklch(37.7% 0.089 275.5)
-
Step 950
950
#1F2342
oklch(26.9% 0.058 276.3)
#525BB4 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) | #3068B7 | 0.046 |
| Deuteranopia (no green cones) | #235FB2 | 0.049 |
| Tritanopia (no blue cones) | #226F7F | 0.123 |
| Achromatopsia (no color) | #636363 | 0.140 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #525BB4
#525BB4
oklch(51% 0.139 275.9)
- #786500
#786500
oklch(51% 0.105 96.1)
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 #525BB4, closest first.
No curated palette has a color within ΔE 0.04 of #525BB4.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.035
- French Blue #436BAD ΔE 0.048
- Slate Blue #6A5ACD ΔE 0.053
- Mid Blue #276AB3 ΔE 0.055
- Dark Periwinkle #665FD1 ΔE 0.055
- Dusky Blue #475F94 ΔE 0.057
- Light Indigo #6D5ACF ΔE 0.059
- Warm Blue #4B57DB ΔE 0.063
Use #525BB4 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.