#539ADE
Closest named color: Chefchaouen Blue (#4895EF). oklch(67% 0.124 249.3), rgb(83, 154, 222).
Aa
Black text reads best on this color (7.04:1).
About this color
#539ADE is a medium-light, moderately saturated blue. In OKLCH its lightness is 67%, its chroma 0.124 and its hue 249°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.033 away. Black text reads best on it, at 7.04:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.124) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 7.04:1 |
| White text | 2.98:1 |
Values
| HEX | #539ADE |
| RGB | rgb(83, 154, 222) |
| HSL | hsl(209, 68%, 60%) |
| OKLCH | oklch(67% 0.124 249.3) |
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 #539ADE | 2.98:1 | Fails | Lc -61.5 | Content text, not long reading |
| Black text on #539ADE | 7.04:1 | AAA | Lc 47.9 | Large or bold text, headings |
| #539ADE text on white | 2.98:1 | Fails | Lc 56.2 | Large or bold text, headings |
| #539ADE text on black | 7.04:1 | AAA | Lc -45.6 | Large or bold text, headings |
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 400.
-
Step 50
50
#F0F6FC
oklch(97% 0.01 247.9)
-
Step 100
100
#DFEBF9
oklch(93.5% 0.023 252.2)
-
Step 200
200
#C4DCF5
oklch(88.5% 0.043 249.4)
-
Step 300
300
#9AC5F1
oklch(80.8% 0.078 249.4)
-
Step 400
400 (this color)
#539ADE
oklch(67% 0.124 249.3)
-
Step 500
500
#268DE4
oklch(63% 0.159 249.4)
-
Step 600
600
#0076C9
oklch(55.6% 0.155 249.4)
-
Step 700
700
#0063AA
oklch(49.1% 0.137 249.4)
-
Step 800
800
#00518C
oklch(42.7% 0.118 249.2)
-
Step 900
900
#014375
oklch(37.6% 0.103 249.2)
-
Step 950
950
#072845
oklch(27.1% 0.066 249.3)
#539ADE 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) | #7D9DE1 | 0.046 |
| Deuteranopia (no green cones) | #6A8FDD | 0.034 |
| Tritanopia (no blue cones) | #00AAB2 | 0.098 |
| Achromatopsia (no color) | #959595 | 0.124 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #539ADE
#539ADE
oklch(67% 0.124 249.3)
- #C68632
#C68632
oklch(67% 0.125 69.6)
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 #539ADE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.033
- Cornflower Blue #6495ED ΔE 0.033
- Dark Sky Blue #448EE4 ΔE 0.040
- Soft Blue #6488EA ΔE 0.056
- Faded Blue #658CBB ΔE 0.057
- Dodger Blue #1E90FF ΔE 0.069
- Water Blue #0E87CC ΔE 0.074
- Cool Blue #4984B8 ΔE 0.077
Use #539ADE 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.