#579AC3
Closest named color: Faded Blue (#658CBB). oklch(65.8% 0.092 237.3), rgb(87, 154, 195).
Aa
Black text reads best on this color (6.81:1).
About this color
#579AC3 is a medium-light, moderately saturated blue. In OKLCH its lightness is 66%, its chroma 0.092 and its hue 237°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.038 away. Black text reads best on it, at 6.81:1.
| Hue family | Blues |
| Lightness | medium-light (66%) |
| Chroma | moderately saturated (0.092) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 6.81:1 |
| White text | 3.08:1 |
Values
| HEX | #579AC3 |
| RGB | rgb(87, 154, 195) |
| HSL | hsl(203, 47%, 55%) |
| OKLCH | oklch(65.8% 0.092 237.3) |
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 #579AC3 | 3.08:1 | AA large text | Lc -63.0 | Content text, not long reading |
| Black text on #579AC3 | 6.81:1 | AA | Lc 46.5 | Large or bold text, headings |
| #579AC3 text on white | 3.08:1 | AA large text | Lc 57.6 | Large or bold text, headings |
| #579AC3 text on black | 6.81:1 | AA | Lc -44.2 | 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
#E2EBF2
oklch(93.5% 0.014 241)
-
Step 200
200
#CBDCE8
oklch(88.5% 0.025 238.4)
-
Step 300
300
#A6C6DA
oklch(81% 0.045 235.5)
-
Step 400
400
#75A8C8
oklch(70.8% 0.072 236.7)
-
Step 500
500 (this color)
#579AC3
oklch(65.8% 0.092 237.3)
-
Step 600
600
#2F7BA6
oklch(55.6% 0.099 237.4)
-
Step 700
700
#20688F
oklch(49.2% 0.093 237.2)
-
Step 800
800
#1D5574
oklch(42.8% 0.077 237)
-
Step 900
900
#1F465D
oklch(37.7% 0.059 237.1)
-
Step 950
950
#132937
oklch(27% 0.038 238.3)
#579AC3 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) | #8799C5 | 0.054 |
| Deuteranopia (no green cones) | #788EC2 | 0.046 |
| Tritanopia (no blue cones) | #00A5A8 | 0.072 |
| Achromatopsia (no color) | #939393 | 0.092 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #579AC3
#579AC3
oklch(65.8% 0.092 237.3)
- #BC8358
#BC8358
oklch(65.8% 0.091 57.4)
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 #579AC3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.038
- Greyblue #77A1B5 ΔE 0.047
- Silver Lake Blue #778DA9 ΔE 0.052
- Blue Grey #758DA3 ΔE 0.056
- Dusty Blue #5A86AD ΔE 0.058
- Cadet Blue #5F9EA0 ΔE 0.058
- Off Blue #5684AE ΔE 0.063
- Cool Blue #4984B8 ΔE 0.065
Use #579AC3 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.