#539CC3
Closest named color: Faded Blue (#658CBB). oklch(66.1% 0.093 233.9), rgb(83, 156, 195).
Aa
Black text reads best on this color (6.91:1).
About this color
#539CC3 is a medium-light, moderately saturated blue. In OKLCH its lightness is 66%, its chroma 0.093 and its hue 234°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.044 away. Black text reads best on it, at 6.91:1.
| Hue family | Blues |
| Lightness | medium-light (66%) |
| Chroma | moderately saturated (0.093) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 6.91:1 |
| White text | 3.03:1 |
Values
| HEX | #539CC3 |
| RGB | rgb(83, 156, 195) |
| HSL | hsl(201, 48%, 55%) |
| OKLCH | oklch(66.1% 0.093 233.9) |
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 #539CC3 | 3.03:1 | AA large text | Lc -62.4 | Content text, not long reading |
| Black text on #539CC3 | 6.91:1 | AA | Lc 47.0 | Large or bold text, headings |
| #539CC3 text on white | 3.03:1 | AA large text | Lc 57.0 | Large or bold text, headings |
| #539CC3 text on black | 6.91:1 | AA | Lc -44.8 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2ECF1
oklch(93.7% 0.013 228.9)
-
Step 200
200
#CADCE8
oklch(88.5% 0.025 236.9)
-
Step 300
300
#A5C6DA
oklch(80.9% 0.045 234.7)
-
Step 400
400
#72A9C7
oklch(70.8% 0.073 233)
-
Step 500
500 (this color)
#539CC3
oklch(66.1% 0.093 233.9)
-
Step 600
600
#267CA5
oklch(55.5% 0.101 234)
-
Step 700
700
#17698E
oklch(49.2% 0.094 233.8)
-
Step 800
800
#175573
oklch(42.6% 0.078 234.4)
-
Step 900
900
#1B475D
oklch(37.8% 0.061 233.4)
-
Step 950
950
#112936
oklch(26.8% 0.039 234.4)
#539CC3 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) | #899AC5 | 0.060 |
| Deuteranopia (no green cones) | #7A8FC2 | 0.051 |
| Tritanopia (no blue cones) | #00A6A9 | 0.067 |
| Achromatopsia (no color) | #949494 | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #539CC3
#539CC3
oklch(66.1% 0.093 233.9)
- #BF835A
#BF835A
oklch(66.1% 0.093 54.7)
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 #539CC3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.044
- Greyblue #77A1B5 ΔE 0.046
- Cadet Blue #5F9EA0 ΔE 0.056
- Silver Lake Blue #778DA9 ΔE 0.056
- Blue Grey #758DA3 ΔE 0.059
- Dusty Blue #5A86AD ΔE 0.062
- Turquoise Blue #06B1C4 ΔE 0.064
- Bluegrey #85A3B2 ΔE 0.065
Use #539CC3 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.