#579EC2
Closest named color: Greyblue (#77A1B5). oklch(66.7% 0.089 232.3), rgb(87, 158, 194).
Aa
Black text reads best on this color (7.07:1).
About this color
#579EC2 is a medium-light, moderately saturated blue. In OKLCH its lightness is 67%, its chroma 0.089 and its hue 232°. Its hue sits on the cool side of the wheel. The nearest named color is Greyblue (#77A1B5), ΔE 0.040 away. Black text reads best on it, at 7.07:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.089) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 7.07:1 |
| White text | 2.96:1 |
Values
| HEX | #579EC2 |
| RGB | rgb(87, 158, 194) |
| HSL | hsl(200, 47%, 55%) |
| OKLCH | oklch(66.7% 0.089 232.3) |
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 #579EC2 | 2.96:1 | Fails | Lc -61.4 | Content text, not long reading |
| Black text on #579EC2 | 7.07:1 | AAA | Lc 48.0 | Large or bold text, headings |
| #579EC2 text on white | 2.96:1 | Fails | Lc 56.1 | Large or bold text, headings |
| #579EC2 text on black | 7.07:1 | AAA | Lc -45.7 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2ECF1
oklch(93.7% 0.013 228.9)
-
Step 200
200
#CADCE7
oklch(88.4% 0.025 234.5)
-
Step 300
300
#A5C6D8
oklch(80.8% 0.044 231.9)
-
Step 400
400
#73A9C5
oklch(70.7% 0.07 231.6)
-
Step 500
500 (this color)
#579EC2
oklch(66.7% 0.089 232.3)
-
Step 600
600
#2A7DA2
oklch(55.7% 0.096 231.7)
-
Step 700
700
#1B698B
oklch(49.1% 0.09 232.2)
-
Step 800
800
#1A5671
oklch(42.8% 0.075 232)
-
Step 900
900
#1D475B
oklch(37.8% 0.058 231.8)
-
Step 950
950
#122A35
oklch(27.1% 0.036 229.8)
#579EC2 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) | #8C9CC4 | 0.060 |
| Deuteranopia (no green cones) | #7D91C1 | 0.051 |
| Tritanopia (no blue cones) | #00A8AA | 0.067 |
| Achromatopsia (no color) | #969696 | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #579EC2
#579EC2
oklch(66.7% 0.089 232.3)
- #C08560
#C08560
oklch(66.7% 0.089 52.7)
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 #579EC2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greyblue #77A1B5 ΔE 0.040
- Faded Blue #658CBB ΔE 0.049
- Cadet Blue #5F9EA0 ΔE 0.052
- Silver Lake Blue #778DA9 ΔE 0.057
- Bluegrey #85A3B2 ΔE 0.058
- Blue Grey #758DA3 ΔE 0.060
- Turquoise Blue #06B1C4 ΔE 0.060
- Bluey Grey #89A0B0 ΔE 0.061
Use #579EC2 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.