#525BD3
Closest named color: Warm Blue (#4B57DB). oklch(53.2% 0.182 275.1), rgb(82, 91, 211).
Aa
White text reads best on this color (5.53:1).
About this color
#525BD3 is a medium-dark, vivid blue. In OKLCH its lightness is 53%, its chroma 0.182 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.019 away. White text reads best on it, at 5.53:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.182) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.79:1 |
| White text | 5.53:1 |
Values
| HEX | #525BD3 |
| RGB | rgb(82, 91, 211) |
| HSL | hsl(236, 59%, 57%) |
| OKLCH | oklch(53.2% 0.182 275.1) |
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 #525BD3 | 5.53:1 | AA | Lc -82.6 | Fine for body text |
| Black text on #525BD3 | 3.79:1 | AA large text | Lc 26.8 | Dividers and decoration only |
| #525BD3 text on white | 5.53:1 | AA | Lc 77.2 | Fine for body text |
| #525BD3 text on black | 3.79:1 | AA large text | Lc -24.5 | 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 600.
-
Step 50
50
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E5E9FA
oklch(93.6% 0.023 275.4)
-
Step 200
200
#D0D7F8
oklch(88.4% 0.046 276)
-
Step 300
300
#B1BDF6
oklch(80.9% 0.082 275.2)
-
Step 400
400
#8999F2
oklch(70.8% 0.131 274.8)
-
Step 500
500
#6E7CED
oklch(63% 0.168 275.2)
-
Step 600
600 (this color)
#525BD3
oklch(53.2% 0.182 275.1)
-
Step 700
700
#4951BE
oklch(49.1% 0.169 275.1)
-
Step 800
800
#3B439A
oklch(42.7% 0.14 274.8)
-
Step 900
900
#32397A
oklch(37.6% 0.109 275.2)
-
Step 950
950
#1D2248
oklch(27% 0.07 275)
#525BD3 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) | #006ED7 | 0.065 |
| Deuteranopia (no green cones) | #0063D1 | 0.059 |
| Tritanopia (no blue cones) | #00788E | 0.156 |
| Achromatopsia (no color) | #686868 | 0.183 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #525BD3
#525BD3
oklch(53.2% 0.182 275.1)
- #806B00
#806B00
oklch(53.2% 0.109 95.4)
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 #525BD3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.019
- Dark Periwinkle #665FD1 ΔE 0.032
- Iris #6258C4 ΔE 0.032
- Slate Blue #6A5ACD ΔE 0.036
- Light Indigo #6D5ACF ΔE 0.040
- Royal Blue #4169E1 ΔE 0.040
- Neon Blue #4361EE ΔE 0.045
- Azul #1D5DEC ΔE 0.061
Use #525BD3 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.