#6172BC
Closest named color: Windows Blue (#3778BF). oklch(57.2% 0.116 272.5), rgb(97, 114, 188).
Aa
Black text reads best on this color (4.64:1).
About this color
#6172BC is a medium-dark, moderately saturated blue. In OKLCH its lightness is 57%, its chroma 0.116 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.044 away. Black text reads best on it, at 4.64:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.116) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 4.64:1 |
| White text | 4.52:1 |
Values
| HEX | #6172BC |
| RGB | rgb(97, 114, 188) |
| HSL | hsl(229, 40%, 56%) |
| OKLCH | oklch(57.2% 0.116 272.5) |
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 #6172BC | 4.52:1 | AA | Lc -76.8 | Fine for body text |
| Black text on #6172BC | 4.64:1 | AA | Lc 32.8 | Non-text elements, placeholder text |
| #6172BC text on white | 4.52:1 | AA | Lc 71.3 | Content text, not long reading |
| #6172BC text on black | 4.64:1 | AA | Lc -30.4 | 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
#E6E9F4
oklch(93.5% 0.015 273.8)
-
Step 200
200
#D2D8ED
oklch(88.4% 0.03 273.1)
-
Step 300
300
#B5BFE3
oklch(80.9% 0.052 273)
-
Step 400
400
#8F9ED5
oklch(70.8% 0.082 272.4)
-
Step 500
500
#7485CA
oklch(63.2% 0.106 272.5)
-
Step 600
600 (this color)
#6172BC
oklch(57.2% 0.116 272.5)
-
Step 700
700
#4C5B9D
oklch(49.1% 0.107 272.3)
-
Step 800
800
#3F4B80
oklch(42.8% 0.089 272.5)
-
Step 900
900
#353F66
oklch(37.8% 0.068 271.9)
-
Step 950
950
#1F253C
oklch(27% 0.044 272.1)
#6172BC 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) | #567ABF | 0.023 |
| Deuteranopia (no green cones) | #4D73BA | 0.024 |
| Tritanopia (no blue cones) | #3D828E | 0.104 |
| Achromatopsia (no color) | #767676 | 0.116 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6172BC
#6172BC
oklch(57.2% 0.116 272.5)
- #907504
#907504
oklch(57.2% 0.116 92.5)
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 #6172BC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.044
- French Blue #436BAD ΔE 0.049
- Flat Blue #3C73A8 ΔE 0.054
- Steel Blue #4682B4 ΔE 0.055
- Cool Blue #4984B8 ΔE 0.055
- Off Blue #5684AE ΔE 0.060
- Dull Blue #49759C ΔE 0.062
- Dark Periwinkle #665FD1 ΔE 0.062
Use #6172BC 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.