#538CF5
Closest named color: Soft Blue (#6488EA). oklch(65.2% 0.168 261.5), rgb(83, 140, 245).
Aa
Black text reads best on this color (6.43:1).
About this color
#538CF5 is a medium-light, vivid blue. In OKLCH its lightness is 65%, its chroma 0.168 and its hue 261°. 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 6.43:1.
| Hue family | Blues |
| Lightness | medium-light (65%) |
| Chroma | vivid (0.168) |
| Temperature | cool |
| Nearest name | Soft Blue (#6488EA) |
| Black text | 6.43:1 |
| White text | 3.26:1 |
Values
| HEX | #538CF5 |
| RGB | rgb(83, 140, 245) |
| HSL | hsl(219, 89%, 64%) |
| OKLCH | oklch(65.2% 0.168 261.5) |
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 #538CF5 | 3.26:1 | AA large text | Lc -65.1 | Content text, not long reading |
| Black text on #538CF5 | 6.43:1 | AA | Lc 44.4 | Non-text elements, placeholder text |
| #538CF5 text on white | 3.26:1 | AA large text | Lc 59.6 | Large or bold text, headings |
| #538CF5 text on black | 6.43:1 | AA | Lc -42.1 | 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
#A3C1F6
oklch(80.8% 0.082 261.6)
-
Step 400
400
#72A0F2
oklch(70.8% 0.131 261.3)
-
Step 500
500 (this color)
#538CF5
oklch(65.2% 0.168 261.5)
-
Step 600
600
#306CDC
oklch(55.6% 0.183 261.5)
-
Step 700
700
#2359BF
oklch(49% 0.17 261.6)
-
Step 800
800
#1F4A9A
oklch(42.7% 0.14 261.4)
-
Step 900
900
#1E3F7B
oklch(37.8% 0.109 261.2)
-
Step 950
950
#122548
oklch(27% 0.07 261.5)
#538CF5 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) | #5A96F9 | 0.028 |
| Deuteranopia (no green cones) | #3F87F3 | 0.023 |
| Tritanopia (no blue cones) | #00A4B4 | 0.138 |
| Achromatopsia (no color) | #8E8E8E | 0.168 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #538CF5
#538CF5
oklch(65.2% 0.168 261.5)
- #B98600
#B98600
oklch(65.3% 0.135 81.6)
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 #538CF5, 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 0.027
- Dark Sky Blue #448EE4 ΔE 0.031
- Dodger Blue #1E90FF ΔE 0.034
- Cornflower Blue #6495ED ΔE 0.035
- Cornflower #6A79F7 ΔE 0.051
- Clear Blue #247AFD ΔE 0.064
- Lavender Blue #8B88F8 ΔE 0.066
Use #538CF5 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.