#6174BB
Closest named color: Windows Blue (#3778BF). oklch(57.6% 0.112 271.2), rgb(97, 116, 187).
Aa
Black text reads best on this color (4.72:1).
About this color
#6174BB is a medium-dark, moderately saturated blue. In OKLCH its lightness is 58%, its chroma 0.112 and its hue 271°. 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 4.72:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.112) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 4.72:1 |
| White text | 4.44:1 |
Values
| HEX | #6174BB |
| RGB | rgb(97, 116, 187) |
| HSL | hsl(227, 40%, 56%) |
| OKLCH | oklch(57.6% 0.112 271.2) |
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 #6174BB | 4.44:1 | AA large text | Lc -76.2 | Fine for body text |
| Black text on #6174BB | 4.72:1 | AA | Lc 33.3 | Non-text elements, placeholder text |
| #6174BB text on white | 4.44:1 | AA large text | Lc 70.7 | Content text, not long reading |
| #6174BB text on black | 4.72:1 | AA | Lc -30.9 | 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
#B4BFE2
oklch(80.8% 0.051 271.5)
-
Step 400
400
#8E9ED4
oklch(70.7% 0.081 271.5)
-
Step 500
500
#7385C8
oklch(63% 0.103 271.7)
-
Step 600
600 (this color)
#6174BB
oklch(57.6% 0.112 271.2)
-
Step 700
700
#4B5C9B
oklch(49.1% 0.103 270.8)
-
Step 800
800
#3E4B7E
oklch(42.7% 0.086 271.5)
-
Step 900
900
#353F65
oklch(37.7% 0.067 271.7)
-
Step 950
950
#1F253B
oklch(27% 0.042 271.7)
#6174BB 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) | #597CBE | 0.022 |
| Deuteranopia (no green cones) | #5074B9 | 0.021 |
| Tritanopia (no blue cones) | #3E838E | 0.101 |
| Achromatopsia (no color) | #787878 | 0.112 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6174BB
#6174BB
oklch(57.6% 0.112 271.2)
- #927614
#927614
oklch(57.7% 0.112 91.1)
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 #6174BB, closest first.
No curated palette has a color within ΔE 0.04 of #6174BB.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.043
- Steel Blue #4682B4 ΔE 0.050
- Cool Blue #4984B8 ΔE 0.050
- French Blue #436BAD ΔE 0.051
- Flat Blue #3C73A8 ΔE 0.053
- Off Blue #5684AE ΔE 0.054
- Dull Blue #49759C ΔE 0.059
- Dusty Blue #5A86AD ΔE 0.060
Use #6174BB 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.