#579BE8
Closest named color: Cornflower Blue (#6495ED). oklch(67.9% 0.134 252.9), rgb(87, 155, 232).
Aa
Black text reads best on this color (7.25:1).
About this color
#579BE8 is a medium-light, moderately saturated blue. In OKLCH its lightness is 68%, its chroma 0.134 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.022 away. Black text reads best on it, at 7.25:1.
| Hue family | Blues |
| Lightness | medium-light (68%) |
| Chroma | moderately saturated (0.134) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 7.25:1 |
| White text | 2.89:1 |
Values
| HEX | #579BE8 |
| RGB | rgb(87, 155, 232) |
| HSL | hsl(212, 76%, 63%) |
| OKLCH | oklch(67.9% 0.134 252.9) |
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 #579BE8 | 2.89:1 | Fails | Lc -60.3 | Content text, not long reading |
| Black text on #579BE8 | 7.25:1 | AAA | Lc 49.1 | Large or bold text, headings |
| #579BE8 text on white | 2.89:1 | Fails | Lc 55.0 | Large or bold text, headings |
| #579BE8 text on black | 7.25:1 | AAA | Lc -46.8 | 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
#F0F6FD
oklch(97.1% 0.011 252.1)
-
Step 100
100
#DFEBFA
oklch(93.6% 0.024 254)
-
Step 200
200
#C4DCF8
oklch(88.6% 0.047 252.4)
-
Step 300
300
#9AC4F6
oklch(80.8% 0.084 253.2)
-
Step 400
400 (this color)
#579BE8
oklch(67.9% 0.134 252.9)
-
Step 500
500
#2A8BED
oklch(63.2% 0.171 252.8)
-
Step 600
600
#0073D3
oklch(55.6% 0.171 252.9)
-
Step 700
700
#0060B3
oklch(49% 0.152 253.2)
-
Step 800
800
#004F94
oklch(42.8% 0.131 252.8)
-
Step 900
900
#05427A
oklch(37.8% 0.111 252.6)
-
Step 950
950
#082748
oklch(27.1% 0.071 253.2)
#579BE8 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) | #7A9FEB | 0.040 |
| Deuteranopia (no green cones) | #6692E6 | 0.026 |
| Tritanopia (no blue cones) | #00ADB7 | 0.108 |
| Achromatopsia (no color) | #989898 | 0.134 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #579BE8
#579BE8
oklch(67.9% 0.134 252.9)
- #C98923
#C98923
oklch(67.9% 0.134 73.1)
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 #579BE8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.022
- Chefchaouen Blue #4895EF ΔE 0.026
- Dark Sky Blue #448EE4 ΔE 0.041
- Soft Blue #6488EA ΔE 0.051
- Dodger Blue #1E90FF ΔE 0.062
- Faded Blue #658CBB ΔE 0.070
- Periwinkle Blue #8F99FB ΔE 0.071
- Perrywinkle #8F8CE7 ΔE 0.071
Use #579BE8 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.