#6B73AE
Closest named color: Off Blue (#5684AE). oklch(57.4% 0.091 277.2), rgb(107, 115, 174).
Aa
Black text reads best on this color (4.68:1).
About this color
#6B73AE is a medium-dark, moderately saturated blue. In OKLCH its lightness is 57%, its chroma 0.091 and its hue 277°. Its hue sits on the cool side of the wheel. The nearest named color is Off Blue (#5684AE), ΔE 0.052 away. Black text reads best on it, at 4.68:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.091) |
| Temperature | cool |
| Nearest name | Off Blue (#5684AE) |
| Black text | 4.68:1 |
| White text | 4.47:1 |
Values
| HEX | #6B73AE |
| RGB | rgb(107, 115, 174) |
| HSL | hsl(233, 29%, 55%) |
| OKLCH | oklch(57.4% 0.091 277.2) |
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 #6B73AE | 4.47:1 | AA large text | Lc -76.5 | Fine for body text |
| Black text on #6B73AE | 4.68:1 | AA | Lc 33.0 | Non-text elements, placeholder text |
| #6B73AE text on white | 4.47:1 | AA large text | Lc 71.0 | Content text, not long reading |
| #6B73AE text on black | 4.68:1 | AA | Lc -30.6 | 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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E8E9F2
oklch(93.6% 0.012 281.1)
-
Step 200
200
#D5D8E9
oklch(88.5% 0.023 277.9)
-
Step 300
300
#B9BFDC
oklch(80.9% 0.041 276.2)
-
Step 400
400
#969DCA
oklch(70.7% 0.066 277.7)
-
Step 500
500
#7D85BC
oklch(63.2% 0.083 277.4)
-
Step 600
600 (this color)
#6B73AE
oklch(57.4% 0.091 277.2)
-
Step 700
700
#555C90
oklch(49.2% 0.084 277)
-
Step 800
800
#454B75
oklch(42.7% 0.07 276.8)
-
Step 900
900
#3A3F5F
oklch(37.8% 0.055 276.6)
-
Step 950
950
#222537
oklch(27% 0.034 276.6)
#6B73AE 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) | #607AB0 | 0.022 |
| Deuteranopia (no green cones) | #5B75AD | 0.021 |
| Tritanopia (no blue cones) | #577F88 | 0.082 |
| Achromatopsia (no color) | #777777 | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6B73AE
#6B73AE
oklch(57.4% 0.091 277.2)
- #877833
#877833
oklch(57.2% 0.091 97.1)
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 #6B73AE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Off Blue #5684AE ΔE 0.052
- Stormy Blue #507B9C ΔE 0.053
- Dark Lavender #856798 ΔE 0.053
- Dull Blue #49759C ΔE 0.054
- Steel Blue #4682B4 ΔE 0.054
- Cool Blue #4984B8 ΔE 0.056
- Dusty Blue #5A86AD ΔE 0.056
- Flat Blue #3C73A8 ΔE 0.057
Use #6B73AE 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.