#579EFF
Closest named color: Cornflower Blue (#6495ED). oklch(69.8% 0.16 256.8), rgb(87, 158, 255).
Aa
Black text reads best on this color (7.73:1).
About this color
#579EFF is a medium-light, vivid blue. In OKLCH its lightness is 70%, its chroma 0.160 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.032 away. Black text reads best on it, at 7.73:1.
| Hue family | Blues |
| Lightness | medium-light (70%) |
| Chroma | vivid (0.160) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 7.73:1 |
| White text | 2.71:1 |
Values
| HEX | #579EFF |
| RGB | rgb(87, 158, 255) |
| HSL | hsl(215, 100%, 67%) |
| OKLCH | oklch(69.8% 0.16 256.8) |
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 #579EFF | 2.71:1 | Fails | Lc -57.5 | Large or bold text, headings |
| Black text on #579EFF | 7.73:1 | AAA | Lc 51.7 | Large or bold text, headings |
| #579EFF text on white | 2.71:1 | Fails | Lc 52.3 | Large or bold text, headings |
| #579EFF text on black | 7.73:1 | AAA | Lc -49.6 | 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
#F0F6FF
oklch(97.1% 0.014 258.3)
-
Step 100
100
#DEEBFE
oklch(93.6% 0.029 257.8)
-
Step 200
200
#C2DBFE
oklch(88.4% 0.055 256.8)
-
Step 300
300
#98C3FF
oklch(80.9% 0.097 256.8)
-
Step 400
400 (this color)
#579EFF
oklch(69.8% 0.16 256.8)
-
Step 500
500
#2486FF
oklch(63.2% 0.2 256.7)
-
Step 600
600
#006EE2
oklch(55.6% 0.196 256.8)
-
Step 700
700
#005CBF
oklch(49% 0.172 256.8)
-
Step 800
800
#004B9F
oklch(42.7% 0.151 256.9)
-
Step 900
900
#003E86
oklch(37.6% 0.133 257)
-
Step 950
950
#05254E
oklch(26.9% 0.084 256.6)
#579EFF 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) | #72A6FF | 0.036 |
| Deuteranopia (no green cones) | #5A96FD | 0.020 |
| Tritanopia (no blue cones) | #00B4C2 | 0.128 |
| Achromatopsia (no color) | #9D9D9D | 0.160 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #579EFF
#579EFF
oklch(69.8% 0.16 256.8)
- #D08F00
#D08F00
oklch(69.7% 0.146 76.5)
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 #579EFF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.032
- Chefchaouen Blue #4895EF ΔE 0.035
- Dodger Blue #1E90FF ΔE 0.056
- Dark Sky Blue #448EE4 ΔE 0.059
- Soft Blue #6488EA ΔE 0.059
- Periwinkle Blue #8F99FB ΔE 0.061
- Lavender Blue #8B88F8 ΔE 0.074
- Perrywinkle #8F8CE7 ΔE 0.075
Use #579EFF 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.