#539FC5
Closest named color: Greyblue (#77A1B5). oklch(66.9% 0.094 232.3), rgb(83, 159, 197).
Aa
Black text reads best on this color (7.13:1).
About this color
#539FC5 is a medium-light, moderately saturated blue. In OKLCH its lightness is 67%, its chroma 0.094 and its hue 232°. Its hue sits on the cool side of the wheel. The nearest named color is Greyblue (#77A1B5), ΔE 0.043 away. Black text reads best on it, at 7.13:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.094) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 7.13:1 |
| White text | 2.94:1 |
Values
| HEX | #539FC5 |
| RGB | rgb(83, 159, 197) |
| HSL | hsl(200, 50%, 55%) |
| OKLCH | oklch(66.9% 0.094 232.3) |
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 #539FC5 | 2.94:1 | Fails | Lc -61.1 | Content text, not long reading |
| Black text on #539FC5 | 7.13:1 | AAA | Lc 48.3 | Large or bold text, headings |
| #539FC5 text on white | 2.94:1 | Fails | Lc 55.7 | Large or bold text, headings |
| #539FC5 text on black | 7.13:1 | AAA | Lc -46.1 | 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
#F0F6FA
oklch(97% 0.008 236.6)
-
Step 100
100
#DFECF3
oklch(93.5% 0.017 230.9)
-
Step 200
200
#C5DDEB
oklch(88.4% 0.032 233.3)
-
Step 300
300
#9BC8E1
oklch(80.9% 0.059 232.8)
-
Step 400
400 (this color)
#539FC5
oklch(66.9% 0.094 232.3)
-
Step 500
500
#2295C5
oklch(63.1% 0.12 232.1)
-
Step 600
600
#007EAA
oklch(55.7% 0.113 231.8)
-
Step 700
700
#006990
oklch(49% 0.101 232.9)
-
Step 800
800
#005676
oklch(42.6% 0.087 232.3)
-
Step 900
900
#004863
oklch(37.7% 0.077 231.8)
-
Step 950
950
#062A3A
oklch(26.9% 0.049 232.2)
#539FC5 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) | #8C9DC7 | 0.063 |
| Deuteranopia (no green cones) | #7C91C4 | 0.054 |
| Tritanopia (no blue cones) | #00A9AB | 0.067 |
| Achromatopsia (no color) | #969696 | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #539FC5
#539FC5
oklch(66.9% 0.094 232.3)
- #C3845D
#C3845D
oklch(66.9% 0.095 52.2)
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 #539FC5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greyblue #77A1B5 ΔE 0.043
- Faded Blue #658CBB ΔE 0.052
- Cadet Blue #5F9EA0 ΔE 0.055
- Turquoise Blue #06B1C4 ΔE 0.057
- Silver Lake Blue #778DA9 ΔE 0.061
- Bluegrey #85A3B2 ΔE 0.061
- Bluey Grey #89A0B0 ΔE 0.064
- Blue Grey #758DA3 ΔE 0.065
Use #539FC5 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.