#538BF5
Closest named color: Soft Blue (#6488EA). oklch(65% 0.169 261.9), rgb(83, 139, 245).
Aa
Black text reads best on this color (6.37:1).
About this color
#538BF5 is a medium-light, vivid blue. In OKLCH its lightness is 65%, its chroma 0.169 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Soft Blue (#6488EA), ΔE 0.023 away. Black text reads best on it, at 6.37:1.
| Hue family | Blues |
| Lightness | medium-light (65%) |
| Chroma | vivid (0.169) |
| Temperature | cool |
| Nearest name | Soft Blue (#6488EA) |
| Black text | 6.37:1 |
| White text | 3.29:1 |
Values
| HEX | #538BF5 |
| RGB | rgb(83, 139, 245) |
| HSL | hsl(219, 89%, 64%) |
| OKLCH | oklch(65% 0.169 261.9) |
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 #538BF5 | 3.29:1 | AA large text | Lc -65.4 | Content text, not long reading |
| Black text on #538BF5 | 6.37:1 | AA | Lc 44.1 | Non-text elements, placeholder text |
| #538BF5 text on white | 3.29:1 | AA large text | Lc 60.0 | Large or bold text, headings |
| #538BF5 text on black | 6.37:1 | AA | Lc -41.7 | Non-text elements, placeholder text |
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 500.
-
Step 50
50
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E1EAFA
oklch(93.5% 0.024 262.1)
-
Step 200
200
#C9DAF8
oklch(88.5% 0.045 261.9)
-
Step 300
300
#A3C1F7
oklch(80.8% 0.084 262)
-
Step 400
400
#729FF3
oklch(70.6% 0.133 262.1)
-
Step 500
500 (this color)
#538BF5
oklch(65% 0.169 261.9)
-
Step 600
600
#316CDD
oklch(55.7% 0.184 261.7)
-
Step 700
700
#2459C0
oklch(49.1% 0.172 261.9)
-
Step 800
800
#1F499B
oklch(42.6% 0.142 261.9)
-
Step 900
900
#1F3E7B
oklch(37.6% 0.11 262.2)
-
Step 950
950
#122548
oklch(27% 0.07 261.5)
#538BF5 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) | #5896F9 | 0.030 |
| Deuteranopia (no green cones) | #3C87F3 | 0.024 |
| Tritanopia (no blue cones) | #00A3B4 | 0.138 |
| Achromatopsia (no color) | #8E8E8E | 0.169 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #538BF5
#538BF5
oklch(65% 0.169 261.9)
- #B88500
#B88500
oklch(65% 0.134 81.4)
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 #538BF5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Blue #6488EA ΔE 0.023
- Chefchaouen Blue #4895EF ΔE 0.030
- Dark Sky Blue #448EE4 ΔE 0.031
- Dodger Blue #1E90FF ΔE 0.034
- Cornflower Blue #6495ED ΔE 0.037
- Cornflower #6A79F7 ΔE 0.048
- Clear Blue #247AFD ΔE 0.062
- Lavender Blue #8B88F8 ΔE 0.066
Use #538BF5 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.