#6177BB
Closest named color: Windows Blue (#3778BF). oklch(58.2% 0.108 269.3), rgb(97, 119, 187).
Aa
Black text reads best on this color (4.86:1).
About this color
#6177BB is a medium-dark, moderately saturated blue. In OKLCH its lightness is 58%, its chroma 0.108 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.043 away. Black text reads best on it, at 4.86:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.108) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 4.86:1 |
| White text | 4.31:1 |
Values
| HEX | #6177BB |
| RGB | rgb(97, 119, 187) |
| HSL | hsl(225, 40%, 56%) |
| OKLCH | oklch(58.2% 0.108 269.3) |
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 #6177BB | 4.31:1 | AA large text | Lc -75.3 | Fine for body text |
| Black text on #6177BB | 4.86:1 | AA | Lc 34.3 | Non-text elements, placeholder text |
| #6177BB text on white | 4.31:1 | AA large text | Lc 69.8 | Content text, not long reading |
| #6177BB text on black | 4.86:1 | AA | Lc -31.9 | 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
#D2D9EC
oklch(88.6% 0.027 269.6)
-
Step 300
300
#B4C0E1
oklch(80.9% 0.049 269.5)
-
Step 400
400
#8D9FD2
oklch(70.7% 0.078 269.3)
-
Step 500
500
#7186C6
oklch(63% 0.1 269.5)
-
Step 600
600 (this color)
#6177BB
oklch(58.2% 0.108 269.3)
-
Step 700
700
#4A5D9A
oklch(49.2% 0.101 269.4)
-
Step 800
800
#3D4C7D
oklch(42.7% 0.084 269.7)
-
Step 900
900
#344064
oklch(37.8% 0.064 269.2)
-
Step 950
950
#1E253B
oklch(26.9% 0.042 269.9)
#6177BB 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) | #5D7EBE | 0.019 |
| Deuteranopia (no green cones) | #5476B9 | 0.017 |
| Tritanopia (no blue cones) | #3D8590 | 0.096 |
| Achromatopsia (no color) | #7A7A7A | 0.108 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6177BB
#6177BB
oklch(58.2% 0.108 269.3)
- #94771E
#94771E
oklch(58.2% 0.108 89.6)
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 #6177BB, closest first.
No curated palette has a color within ΔE 0.04 of #6177BB.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.043
- Cool Blue #4984B8 ΔE 0.043
- Steel Blue #4682B4 ΔE 0.044
- Off Blue #5684AE ΔE 0.047
- Dusty Blue #5A86AD ΔE 0.053
- Flat Blue #3C73A8 ΔE 0.054
- French Blue #436BAD ΔE 0.055
- Stormy Blue #507B9C ΔE 0.058
Use #6177BB 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.