#6674BE
Closest named color: Windows Blue (#3778BF). oklch(58.1% 0.115 274.2), rgb(102, 116, 190).
Aa
Black text reads best on this color (4.80:1).
About this color
#6674BE is a medium-dark, moderately saturated blue. In OKLCH its lightness is 58%, its chroma 0.115 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.050 away. Black text reads best on it, at 4.80:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.115) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 4.80:1 |
| White text | 4.36:1 |
Values
| HEX | #6674BE |
| RGB | rgb(102, 116, 190) |
| HSL | hsl(230, 40%, 57%) |
| OKLCH | oklch(58.1% 0.115 274.2) |
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 #6674BE | 4.36:1 | AA large text | Lc -75.7 | Fine for body text |
| Black text on #6674BE | 4.80:1 | AA | Lc 33.9 | Non-text elements, placeholder text |
| #6674BE text on white | 4.36:1 | AA large text | Lc 70.2 | Content text, not long reading |
| #6674BE text on black | 4.80:1 | AA | Lc -31.5 | 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
#E6E9F4
oklch(93.5% 0.015 273.8)
-
Step 200
200
#D3D8ED
oklch(88.5% 0.029 275.1)
-
Step 300
300
#B6BFE3
oklch(81% 0.052 274.2)
-
Step 400
400
#909DD5
oklch(70.7% 0.083 274)
-
Step 500
500
#7684C9
oklch(63.1% 0.105 274.3)
-
Step 600
600 (this color)
#6674BE
oklch(58.1% 0.115 274.2)
-
Step 700
700
#4F5A9D
oklch(49.1% 0.108 274.7)
-
Step 800
800
#404A7F
oklch(42.6% 0.089 274)
-
Step 900
900
#363E66
oklch(37.6% 0.069 274)
-
Step 950
950
#20253C
oklch(27.1% 0.043 273.8)
#6674BE 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) | #587DC1 | 0.027 |
| Deuteranopia (no green cones) | #5175BC | 0.026 |
| Tritanopia (no blue cones) | #468390 | 0.101 |
| Achromatopsia (no color) | #797979 | 0.115 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6674BE
#6674BE
oklch(58.1% 0.115 274.2)
- #917910
#917910
oklch(58.2% 0.115 94.4)
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 #6674BE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.050
- Cool Blue #4984B8 ΔE 0.055
- Steel Blue #4682B4 ΔE 0.055
- French Blue #436BAD ΔE 0.058
- Off Blue #5684AE ΔE 0.058
- Flat Blue #3C73A8 ΔE 0.062
- Dusty Blue #5A86AD ΔE 0.063
- Dark Periwinkle #665FD1 ΔE 0.065
Use #6674BE 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.