#6B74BC
Closest named color: Windows Blue (#3778BF). oklch(58.3% 0.111 277), rgb(107, 116, 188).
Aa
Black text reads best on this color (4.84:1).
About this color
#6B74BC is a medium-dark, moderately saturated blue. In OKLCH its lightness is 58%, its chroma 0.111 and its hue 277°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.056 away. Black text reads best on it, at 4.84:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.111) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 4.84:1 |
| White text | 4.33:1 |
Values
| HEX | #6B74BC |
| RGB | rgb(107, 116, 188) |
| HSL | hsl(233, 38%, 58%) |
| OKLCH | oklch(58.3% 0.111 277) |
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 #6B74BC | 4.33:1 | AA large text | Lc -75.4 | Fine for body text |
| Black text on #6B74BC | 4.84:1 | AA | Lc 34.2 | Non-text elements, placeholder text |
| #6B74BC text on white | 4.33:1 | AA large text | Lc 69.9 | Content text, not long reading |
| #6B74BC text on black | 4.84:1 | AA | Lc -31.8 | 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
#E7E9F4
oklch(93.6% 0.015 277.8)
-
Step 200
200
#D4D8EC
oklch(88.5% 0.028 276.8)
-
Step 300
300
#B8BEE1
oklch(80.8% 0.05 277.6)
-
Step 400
400
#949CD2
oklch(70.6% 0.079 277.6)
-
Step 500
500
#7A83C7
oklch(63.1% 0.103 277.3)
-
Step 600
600 (this color)
#6B74BC
oklch(58.3% 0.111 277)
-
Step 700
700
#525A9A
oklch(49.1% 0.102 276.5)
-
Step 800
800
#434A7D
oklch(42.7% 0.085 276.3)
-
Step 900
900
#393E64
oklch(37.7% 0.065 277.1)
-
Step 950
950
#21243B
oklch(26.9% 0.043 277.4)
#6B74BC 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) | #5A7DBF | 0.030 |
| Deuteranopia (no green cones) | #5476BA | 0.030 |
| Tritanopia (no blue cones) | #51838F | 0.098 |
| Achromatopsia (no color) | #797979 | 0.111 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6B74BC
#6B74BC
oklch(58.3% 0.111 277)
- #8E7B1C
#8E7B1C
oklch(58.4% 0.111 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 #6B74BC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.056
- Cool Blue #4984B8 ΔE 0.057
- Steel Blue #4682B4 ΔE 0.058
- Off Blue #5684AE ΔE 0.059
- French Blue #436BAD ΔE 0.063
- Dusty Blue #5A86AD ΔE 0.063
- Flat Blue #3C73A8 ΔE 0.066
- Deep Lilac #966EBD ΔE 0.066
Use #6B74BC 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.