#5D73BE
Closest named color: Windows Blue (#3778BF). oklch(57.3% 0.119 270), rgb(93, 115, 190).
Aa
Black text reads best on this color (4.66:1).
About this color
#5D73BE is a medium-dark, moderately saturated blue. In OKLCH its lightness is 57%, its chroma 0.119 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.039 away. Black text reads best on it, at 4.66:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.119) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 4.66:1 |
| White text | 4.50:1 |
Values
| HEX | #5D73BE |
| RGB | rgb(93, 115, 190) |
| HSL | hsl(226, 43%, 55%) |
| OKLCH | oklch(57.3% 0.119 270) |
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 #5D73BE | 4.50:1 | AA | Lc -76.6 | Fine for body text |
| Black text on #5D73BE | 4.66:1 | AA | Lc 32.9 | Non-text elements, placeholder text |
| #5D73BE text on white | 4.50:1 | AA | Lc 71.1 | Content text, not long reading |
| #5D73BE text on black | 4.66:1 | AA | Lc -30.5 | 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
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E6EAF5
oklch(93.7% 0.015 270)
-
Step 200
200
#D1D9ED
oklch(88.5% 0.029 268.3)
-
Step 300
300
#B3C0E4
oklch(81% 0.053 269.6)
-
Step 400
400
#8C9ED7
oklch(70.7% 0.086 270.6)
-
Step 500
500
#7085CC
oklch(63% 0.11 270.5)
-
Step 600
600 (this color)
#5D73BE
oklch(57.3% 0.119 270)
-
Step 700
700
#495C9F
oklch(49.2% 0.11 270.1)
-
Step 800
800
#3C4B81
oklch(42.7% 0.092 270.4)
-
Step 900
900
#333F67
oklch(37.7% 0.07 270.1)
-
Step 950
950
#1E253D
oklch(27% 0.046 270.7)
#5D73BE 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) | #557BC1 | 0.022 |
| Deuteranopia (no green cones) | #4B73BC | 0.022 |
| Tritanopia (no blue cones) | #32838F | 0.107 |
| Achromatopsia (no color) | #777777 | 0.119 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5D73BE
#5D73BE
oklch(57.3% 0.119 270)
- #937400
#937400
oklch(57.3% 0.117 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 #5D73BE, closest first.
No curated palette has a color within ΔE 0.04 of #5D73BE.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.039
- French Blue #436BAD ΔE 0.047
- Steel Blue #4682B4 ΔE 0.052
- Flat Blue #3C73A8 ΔE 0.052
- Cool Blue #4984B8 ΔE 0.053
- Off Blue #5684AE ΔE 0.059
- Dull Blue #49759C ΔE 0.062
- Dark Periwinkle #665FD1 ΔE 0.063
Use #5D73BE 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.