#6177CE
Closest named color: Windows Blue (#3778BF). oklch(59.3% 0.135 271.1), rgb(97, 119, 206).
Aa
Black text reads best on this color (5.03:1).
About this color
#6177CE is a medium-dark, moderately saturated blue. In OKLCH its lightness is 59%, its chroma 0.135 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.051 away. Black text reads best on it, at 5.03:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.135) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 5.03:1 |
| White text | 4.16:1 |
Values
| HEX | #6177CE |
| RGB | rgb(97, 119, 206) |
| HSL | hsl(228, 53%, 59%) |
| OKLCH | oklch(59.3% 0.135 271.1) |
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 #6177CE | 4.16:1 | AA large text | Lc -74.0 | Content text, not long reading |
| Black text on #6177CE | 5.03:1 | AA | Lc 35.5 | Non-text elements, placeholder text |
| #6177CE text on white | 4.16:1 | AA large text | Lc 68.5 | Content text, not long reading |
| #6177CE text on black | 5.03:1 | AA | Lc -33.1 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E5EAF6
oklch(93.7% 0.017 267.8)
-
Step 200
200
#D1D8F0
oklch(88.4% 0.034 272.8)
-
Step 300
300
#B2BFE9
oklch(80.9% 0.061 271.5)
-
Step 400
400
#8A9DDE
oklch(70.7% 0.098 271.2)
-
Step 500
500
#6E84D5
oklch(63.2% 0.125 271)
-
Step 600
600 (this color)
#6177CE
oklch(59.3% 0.135 271.1)
-
Step 700
700
#475AA7
oklch(49.1% 0.125 270.8)
-
Step 800
800
#3A4A88
oklch(42.8% 0.104 270.6)
-
Step 900
900
#323E6C
oklch(37.7% 0.08 271.1)
-
Step 950
950
#1D2540
oklch(27.1% 0.052 270.2)
#6177CE 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) | #5381D1 | 0.028 |
| Deuteranopia (no green cones) | #4678CC | 0.030 |
| Tritanopia (no blue cones) | #2C8A98 | 0.122 |
| Achromatopsia (no color) | #7C7C7C | 0.135 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6177CE
#6177CE
oklch(59.3% 0.135 271.1)
- #997A00
#997A00
oklch(59.2% 0.121 90.9)
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 #6177CE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.051
- Soft Blue #6488EA ΔE 0.057
- Cool Blue #4984B8 ΔE 0.060
- Dark Periwinkle #665FD1 ΔE 0.061
- Steel Blue #4682B4 ΔE 0.062
- Cornflower #6A79F7 ΔE 0.063
- Royal Blue #4169E1 ΔE 0.064
- Dark Sky Blue #448EE4 ΔE 0.065
Use #6177CE 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.