#539CCC
Closest named color: Faded Blue (#658CBB). oklch(66.5% 0.102 239.6), rgb(83, 156, 204).
Aa
Black text reads best on this color (6.99:1).
About this color
#539CCC is a medium-light, moderately saturated blue. In OKLCH its lightness is 67%, its chroma 0.102 and its hue 240°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.046 away. Black text reads best on it, at 6.99:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.102) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 6.99:1 |
| White text | 3.00:1 |
Values
| HEX | #539CCC |
| RGB | rgb(83, 156, 204) |
| HSL | hsl(204, 54%, 56%) |
| OKLCH | oklch(66.5% 0.102 239.6) |
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 #539CCC | 3.00:1 | AA large text | Lc -61.9 | Content text, not long reading |
| Black text on #539CCC | 6.99:1 | AA | Lc 47.5 | Large or bold text, headings |
| #539CCC text on white | 3.00:1 | AA large text | Lc 56.5 | Large or bold text, headings |
| #539CCC text on black | 6.99:1 | AA | Lc -45.3 | 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 500.
-
Step 50
50
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E2EBF3
oklch(93.6% 0.015 244.7)
-
Step 200
200
#C9DCEA
oklch(88.5% 0.028 239.7)
-
Step 300
300
#A4C6DE
oklch(81% 0.05 239)
-
Step 400
400
#71A8CE
oklch(70.8% 0.08 239.5)
-
Step 500
500 (this color)
#539CCC
oklch(66.5% 0.102 239.6)
-
Step 600
600
#257BAD
oklch(55.6% 0.111 239.4)
-
Step 700
700
#156795
oklch(49% 0.104 239.9)
-
Step 800
800
#165479
oklch(42.6% 0.086 240.2)
-
Step 900
900
#1A4661
oklch(37.7% 0.067 239.1)
-
Step 950
950
#112939
oklch(27% 0.042 240.1)
#539CCC 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) | #869CCE | 0.056 |
| Deuteranopia (no green cones) | #768FCB | 0.048 |
| Tritanopia (no blue cones) | #00A8AC | 0.077 |
| Achromatopsia (no color) | #959595 | 0.102 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #539CCC
#539CCC
oklch(66.5% 0.102 239.6)
- #C28450
#C28450
oklch(66.5% 0.102 59.7)
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 #539CCC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.046
- Greyblue #77A1B5 ΔE 0.054
- Cornflower Blue #6495ED ΔE 0.061
- Chefchaouen Blue #4895EF ΔE 0.061
- Dark Sky Blue #448EE4 ΔE 0.061
- Silver Lake Blue #778DA9 ΔE 0.063
- Dusty Blue #5A86AD ΔE 0.067
- Blue Grey #758DA3 ΔE 0.068
Use #539CCC 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.