#525EB4
Closest named color: Iris (#6258C4). oklch(51.6% 0.135 274.7), rgb(82, 94, 180).
Aa
White text reads best on this color (5.80:1).
About this color
#525EB4 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 52%, its chroma 0.135 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.038 away. White text reads best on it, at 5.80:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.135) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.61:1 |
| White text | 5.80:1 |
Values
| HEX | #525EB4 |
| RGB | rgb(82, 94, 180) |
| HSL | hsl(233, 40%, 51%) |
| OKLCH | oklch(51.6% 0.135 274.7) |
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 #525EB4 | 5.80:1 | AA | Lc -84.1 | Fine for body text |
| Black text on #525EB4 | 3.61:1 | AA large text | Lc 25.2 | Dividers and decoration only |
| #525EB4 text on white | 5.80:1 | AA | Lc 78.8 | Fine for body text |
| #525EB4 text on black | 3.61:1 | AA large text | Lc -23.0 | 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
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E6E9F7
oklch(93.6% 0.019 276.3)
-
Step 200
200
#D1D8F2
oklch(88.5% 0.037 273.7)
-
Step 300
300
#B4BEEC
oklch(80.9% 0.066 275.3)
-
Step 400
400
#8D9BE2
oklch(70.6% 0.105 274.9)
-
Step 500
500
#7281D9
oklch(63.1% 0.133 274.6)
-
Step 600
600
#5C69C7
oklch(55.7% 0.145 274.8)
-
Step 700
700 (this color)
#525EB4
oklch(51.6% 0.135 274.7)
-
Step 800
800
#3E478B
oklch(42.6% 0.112 274.9)
-
Step 900
900
#343C6F
oklch(37.6% 0.087 274.7)
-
Step 950
950
#1F2441
oklch(27.1% 0.054 274.8)
#525EB4 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) | #366AB7 | 0.040 |
| Deuteranopia (no green cones) | #2A61B2 | 0.043 |
| Tritanopia (no blue cones) | #227180 | 0.120 |
| Achromatopsia (no color) | #656565 | 0.135 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #525EB4
#525EB4
oklch(51.6% 0.135 274.7)
- #7B6600
#7B6600
oklch(51.5% 0.106 94.8)
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 #525EB4, closest first.
No curated palette has a color within ΔE 0.04 of #525EB4.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.038
- French Blue #436BAD ΔE 0.041
- Mid Blue #276AB3 ΔE 0.050
- Slate Blue #6A5ACD ΔE 0.054
- Dark Periwinkle #665FD1 ΔE 0.054
- Dusky Blue #475F94 ΔE 0.055
- Light Indigo #6D5ACF ΔE 0.059
- Denim Blue #3B5B92 ΔE 0.063
Use #525EB4 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.