#6170BF
Closest named color: Windows Blue (#3778BF). oklch(56.9% 0.123 273.8), rgb(97, 112, 191).
Aa
White text reads best on this color (4.58:1).
About this color
#6170BF is a medium-dark, moderately saturated blue. In OKLCH its lightness is 57%, its chroma 0.123 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.046 away. White text reads best on it, at 4.58:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.123) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 4.57:1 |
| White text | 4.58:1 |
Values
| HEX | #6170BF |
| RGB | rgb(97, 112, 191) |
| HSL | hsl(230, 42%, 56%) |
| OKLCH | oklch(56.9% 0.123 273.8) |
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 #6170BF | 4.58:1 | AA | Lc -77.2 | Fine for body text |
| Black text on #6170BF | 4.57:1 | AA | Lc 32.4 | Non-text elements, placeholder text |
| #6170BF text on white | 4.58:1 | AA | Lc 71.7 | Content text, not long reading |
| #6170BF text on black | 4.57:1 | AA | Lc -29.9 | Dividers and decoration only |
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
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E6E9F5
oklch(93.5% 0.016 274.8)
-
Step 200
200
#D2D8EE
oklch(88.4% 0.031 273.6)
-
Step 300
300
#B5BFE5
oklch(81% 0.055 273.5)
-
Step 400
400
#8F9DD8
oklch(70.7% 0.088 273.7)
-
Step 500
500
#7484CE
oklch(63.2% 0.113 273.5)
-
Step 600
600 (this color)
#6170BF
oklch(56.9% 0.123 273.8)
-
Step 700
700
#4D5AA1
oklch(49.2% 0.114 273.7)
-
Step 800
800
#3F4A82
oklch(42.8% 0.094 273.4)
-
Step 900
900
#353E69
oklch(37.7% 0.074 273.4)
-
Step 950
950
#1F243D
oklch(26.8% 0.047 274.2)
#6170BF 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) | #5179C2 | 0.028 |
| Deuteranopia (no green cones) | #4872BD | 0.030 |
| Tritanopia (no blue cones) | #3C818E | 0.110 |
| Achromatopsia (no color) | #757575 | 0.123 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6170BF
#6170BF
oklch(56.9% 0.123 273.8)
- #8E7500
#8E7500
oklch(57% 0.117 94)
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 #6170BF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.046
- French Blue #436BAD ΔE 0.049
- Dark Periwinkle #665FD1 ΔE 0.055
- Flat Blue #3C73A8 ΔE 0.058
- Steel Blue #4682B4 ΔE 0.061
- Cool Blue #4984B8 ΔE 0.062
- Slate Blue #6A5ACD ΔE 0.062
- Iris #6258C4 ΔE 0.063
Use #6170BF 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.