#579DD7
Closest named color: Cornflower Blue (#6495ED). oklch(67.5% 0.112 245.5), rgb(87, 157, 215).
Aa
Black text reads best on this color (7.20:1).
About this color
#579DD7 is a medium-light, moderately saturated blue. In OKLCH its lightness is 67%, its chroma 0.112 and its hue 246°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.046 away. Black text reads best on it, at 7.20:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.112) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 7.20:1 |
| White text | 2.91:1 |
Values
| HEX | #579DD7 |
| RGB | rgb(87, 157, 215) |
| HSL | hsl(207, 62%, 59%) |
| OKLCH | oklch(67.5% 0.112 245.5) |
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 #579DD7 | 2.91:1 | Fails | Lc -60.6 | Content text, not long reading |
| Black text on #579DD7 | 7.20:1 | AAA | Lc 48.7 | Large or bold text, headings |
| #579DD7 text on white | 2.91:1 | Fails | Lc 55.3 | Large or bold text, headings |
| #579DD7 text on black | 7.20:1 | AAA | Lc -46.5 | 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
#F0F6FB
oklch(97% 0.009 242.8)
-
Step 100
100
#DFECF7
oklch(93.7% 0.02 243.4)
-
Step 200
200
#C5DCF2
oklch(88.4% 0.039 247.1)
-
Step 300
300
#9BC6EB
oklch(80.9% 0.07 244.8)
-
Step 400
400 (this color)
#579DD7
oklch(67.5% 0.112 245.5)
-
Step 500
500
#2A90DA
oklch(63.2% 0.143 245.5)
-
Step 600
600
#0079C0
oklch(55.7% 0.141 245.3)
-
Step 700
700
#0065A2
oklch(49% 0.125 245.5)
-
Step 800
800
#005386
oklch(42.8% 0.108 245.3)
-
Step 900
900
#04456F
oklch(37.7% 0.093 245.1)
-
Step 950
950
#082941
oklch(27.1% 0.058 244.7)
#579DD7 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) | #849EDA | 0.050 |
| Deuteranopia (no green cones) | #7392D6 | 0.038 |
| Tritanopia (no blue cones) | #00ABB1 | 0.089 |
| Achromatopsia (no color) | #979797 | 0.112 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #579DD7
#579DD7
oklch(67.5% 0.112 245.5)
- #C58846
#C58846
oklch(67.5% 0.111 66)
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 #579DD7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.046
- Chefchaouen Blue #4895EF ΔE 0.048
- Dark Sky Blue #448EE4 ΔE 0.054
- Faded Blue #658CBB ΔE 0.054
- Greyblue #77A1B5 ΔE 0.063
- Soft Blue #6488EA ΔE 0.069
- Silver Lake Blue #778DA9 ΔE 0.074
- Turquoise Blue #06B1C4 ΔE 0.077
Use #579DD7 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.