#539AFE
Closest named color: Chefchaouen Blue (#4895EF). oklch(68.7% 0.164 257.3), rgb(83, 154, 254).
Aa
Black text reads best on this color (7.42:1).
About this color
#539AFE is a medium-light, vivid blue. In OKLCH its lightness is 69%, its chroma 0.164 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.027 away. Black text reads best on it, at 7.42:1.
| Hue family | Blues |
| Lightness | medium-light (69%) |
| Chroma | vivid (0.164) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 7.42:1 |
| White text | 2.82:1 |
Values
| HEX | #539AFE |
| RGB | rgb(83, 154, 254) |
| HSL | hsl(215, 99%, 66%) |
| OKLCH | oklch(68.7% 0.164 257.3) |
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 #539AFE | 2.82:1 | Fails | Lc -59.3 | Large or bold text, headings |
| Black text on #539AFE | 7.42:1 | AAA | Lc 50.0 | Large or bold text, headings |
| #539AFE text on white | 2.82:1 | Fails | Lc 54.0 | Large or bold text, headings |
| #539AFE text on black | 7.42:1 | AAA | Lc -47.8 | 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
#F0F6FF
oklch(97.1% 0.014 258.3)
-
Step 100
100
#DEEBFE
oklch(93.6% 0.029 257.8)
-
Step 200
200
#C2DBFF
oklch(88.5% 0.057 257.5)
-
Step 300
300
#99C3FF
oklch(80.9% 0.097 257.3)
-
Step 400
400 (this color)
#539AFE
oklch(68.7% 0.164 257.3)
-
Step 500
500
#2885FF
oklch(63% 0.201 257.3)
-
Step 600
600
#006DE5
oklch(55.6% 0.201 257.4)
-
Step 700
700
#005BC2
oklch(49% 0.177 257.5)
-
Step 800
800
#004AA0
oklch(42.5% 0.154 257.4)
-
Step 900
900
#003E87
oklch(37.7% 0.135 257.2)
-
Step 950
950
#052550
oklch(27.1% 0.087 257.4)
#539AFE 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) | #6CA2FF | 0.034 |
| Deuteranopia (no green cones) | #5292FC | 0.021 |
| Tritanopia (no blue cones) | #00B1C0 | 0.131 |
| Achromatopsia (no color) | #9A9A9A | 0.164 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #539AFE
#539AFE
oklch(68.7% 0.164 257.3)
- #CB8D00
#CB8D00
oklch(68.7% 0.144 77.5)
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 #539AFE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.027
- Cornflower Blue #6495ED ΔE 0.028
- Dodger Blue #1E90FF ΔE 0.045
- Dark Sky Blue #448EE4 ΔE 0.050
- Soft Blue #6488EA ΔE 0.050
- Periwinkle Blue #8F99FB ΔE 0.065
- Lavender Blue #8B88F8 ΔE 0.071
- Perrywinkle #8F8CE7 ΔE 0.075
Use #539AFE 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.