#6579C2
Closest named color: Cool Blue (#4984B8). oklch(59.3% 0.114 271), rgb(101, 121, 194).
Aa
Black text reads best on this color (5.06:1).
About this color
#6579C2 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 59%, its chroma 0.114 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Blue (#4984B8), ΔE 0.047 away. Black text reads best on it, at 5.06:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.114) |
| Temperature | cool |
| Nearest name | Cool Blue (#4984B8) |
| Black text | 5.06:1 |
| White text | 4.14:1 |
Values
| HEX | #6579C2 |
| RGB | rgb(101, 121, 194) |
| HSL | hsl(227, 43%, 58%) |
| OKLCH | oklch(59.3% 0.114 271) |
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 #6579C2 | 4.14:1 | AA large text | Lc -73.9 | Content text, not long reading |
| Black text on #6579C2 | 5.06:1 | AA | Lc 35.7 | Non-text elements, placeholder text |
| #6579C2 text on white | 4.14:1 | AA large text | Lc 68.4 | Content text, not long reading |
| #6579C2 text on black | 5.06:1 | AA | Lc -33.3 | Non-text elements, placeholder text |
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 600.
-
Step 50
50
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E6EAF4
oklch(93.7% 0.014 268.5)
-
Step 200
200
#D2D9ED
oklch(88.6% 0.029 270.4)
-
Step 300
300
#B4C0E3
oklch(81% 0.051 270.3)
-
Step 400
400
#8D9ED5
oklch(70.7% 0.083 270.9)
-
Step 500
500
#7285C9
oklch(63% 0.105 271.2)
-
Step 600
600 (this color)
#6579C2
oklch(59.3% 0.114 271)
-
Step 700
700
#4B5C9D
oklch(49.2% 0.106 271)
-
Step 800
800
#3D4B7F
oklch(42.6% 0.088 270.9)
-
Step 900
900
#343F66
oklch(37.7% 0.069 270.9)
-
Step 950
950
#1F253C
oklch(27% 0.044 272.1)
#6579C2 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) | #5D81C5 | 0.022 |
| Deuteranopia (no green cones) | #5479C0 | 0.021 |
| Tritanopia (no blue cones) | #418894 | 0.102 |
| Achromatopsia (no color) | #7D7D7D | 0.114 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6579C2
#6579C2
oklch(59.3% 0.114 271)
- #977B17
#977B17
oklch(59.3% 0.114 91.6)
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 #6579C2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Blue #4984B8 ΔE 0.047
- Steel Blue #4682B4 ΔE 0.049
- Windows Blue #3778BF ΔE 0.049
- Off Blue #5684AE ΔE 0.052
- Dusty Blue #5A86AD ΔE 0.056
- Faded Blue #658CBB ΔE 0.057
- Flat Blue #3C73A8 ΔE 0.066
- Soft Blue #6488EA ΔE 0.066
Use #6579C2 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.