#579FF3
Closest named color: Cornflower Blue (#6495ED). oklch(69.3% 0.144 253.7), rgb(87, 159, 243).
Aa
Black text reads best on this color (7.65:1).
About this color
#579FF3 is a medium-light, vivid blue. In OKLCH its lightness is 69%, its chroma 0.144 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.027 away. Black text reads best on it, at 7.65:1.
| Hue family | Blues |
| Lightness | medium-light (69%) |
| Chroma | vivid (0.144) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 7.65:1 |
| White text | 2.74:1 |
Values
| HEX | #579FF3 |
| RGB | rgb(87, 159, 243) |
| HSL | hsl(212, 87%, 65%) |
| OKLCH | oklch(69.3% 0.144 253.7) |
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 #579FF3 | 2.74:1 | Fails | Lc -58.0 | Large or bold text, headings |
| Black text on #579FF3 | 7.65:1 | AAA | Lc 51.3 | Large or bold text, headings |
| #579FF3 text on white | 2.74:1 | Fails | Lc 52.8 | Large or bold text, headings |
| #579FF3 text on black | 7.65:1 | AAA | Lc -49.1 | 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
#F0F6FE
oklch(97.1% 0.012 255.5)
-
Step 100
100
#DEEBFB
oklch(93.5% 0.026 253.6)
-
Step 200
200
#C3DCFA
oklch(88.6% 0.049 253.1)
-
Step 300
300
#98C4FA
oklch(80.9% 0.09 253.9)
-
Step 400
400 (this color)
#579FF3
oklch(69.3% 0.144 253.7)
-
Step 500
500
#2089F4
oklch(63% 0.184 253.7)
-
Step 600
600
#0072D6
oklch(55.6% 0.176 253.8)
-
Step 700
700
#0060B5
oklch(49.2% 0.155 253.6)
-
Step 800
800
#004E96
oklch(42.7% 0.135 253.8)
-
Step 900
900
#00417E
oklch(37.7% 0.118 253.6)
-
Step 950
950
#05274A
oklch(27.1% 0.075 252.9)
#579FF3 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) | #7AA4F6 | 0.040 |
| Deuteranopia (no green cones) | #6595F1 | 0.027 |
| Tritanopia (no blue cones) | #00B2BE | 0.114 |
| Achromatopsia (no color) | #9C9C9C | 0.144 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #579FF3
#579FF3
oklch(69.3% 0.144 253.7)
- #D18C10
#D18C10
oklch(69.3% 0.144 73.4)
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 #579FF3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.027
- Chefchaouen Blue #4895EF ΔE 0.032
- Dark Sky Blue #448EE4 ΔE 0.053
- Soft Blue #6488EA ΔE 0.059
- Dodger Blue #1E90FF ΔE 0.062
- Periwinkle Blue #8F99FB ΔE 0.064
- Perrywinkle #8F8CE7 ΔE 0.074
- Lavender Blue #8B88F8 ΔE 0.079
Use #579FF3 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.