#586EBF
Closest named color: French Blue (#436BAD). oklch(55.9% 0.128 270.4), rgb(88, 110, 191).
Aa
White text reads best on this color (4.77:1).
About this color
#586EBF is a medium-dark, moderately saturated blue. In OKLCH its lightness is 56%, its chroma 0.128 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.039 away. White text reads best on it, at 4.77:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.128) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 4.39:1 |
| White text | 4.77:1 |
Values
| HEX | #586EBF |
| RGB | rgb(88, 110, 191) |
| HSL | hsl(227, 45%, 55%) |
| OKLCH | oklch(55.9% 0.128 270.4) |
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 #586EBF | 4.77:1 | AA | Lc -78.4 | Fine for body text |
| Black text on #586EBF | 4.39:1 | AA large text | Lc 31.1 | Non-text elements, placeholder text |
| #586EBF text on white | 4.77:1 | AA | Lc 73.0 | Content text, not long reading |
| #586EBF text on black | 4.39:1 | AA large text | Lc -28.7 | Dividers and decoration only |
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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E5EAF5
oklch(93.6% 0.016 266.3)
-
Step 200
200
#D1D9EF
oklch(88.6% 0.031 269.8)
-
Step 300
300
#B2BFE7
oklch(80.8% 0.058 270.9)
-
Step 400
400
#8A9EDB
oklch(70.7% 0.093 270)
-
Step 500
500
#6E85D1
oklch(63.2% 0.118 270)
-
Step 600
600 (this color)
#586EBF
oklch(55.9% 0.128 270.4)
-
Step 700
700
#475BA4
oklch(49.2% 0.119 270)
-
Step 800
800
#3B4A85
oklch(42.7% 0.099 270.9)
-
Step 900
900
#323F6A
oklch(37.8% 0.076 269.8)
-
Step 950
950
#1D253E
oklch(27% 0.048 269.5)
#586EBF 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) | #4C77C2 | 0.026 |
| Deuteranopia (no green cones) | #406EBD | 0.027 |
| Tritanopia (no blue cones) | #24808D | 0.115 |
| Achromatopsia (no color) | #737373 | 0.128 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #586EBF
#586EBF
oklch(55.9% 0.128 270.4)
- #8E7000
#8E7000
oklch(55.9% 0.114 90)
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 #586EBF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.039
- Windows Blue #3778BF ΔE 0.040
- Flat Blue #3C73A8 ΔE 0.052
- Dark Periwinkle #665FD1 ΔE 0.052
- Mid Blue #276AB3 ΔE 0.055
- Iris #6258C4 ΔE 0.058
- Slate Blue #6A5ACD ΔE 0.060
- Royal Blue #4169E1 ΔE 0.061
Use #586EBF 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.