#667AC8
Closest named color: Cool Blue (#4984B8). oklch(59.9% 0.121 271.5), rgb(102, 122, 200).
Aa
Black text reads best on this color (5.18:1).
About this color
#667AC8 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 60%, its chroma 0.121 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Blue (#4984B8), ΔE 0.051 away. Black text reads best on it, at 5.18:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | moderately saturated (0.121) |
| Temperature | cool |
| Nearest name | Cool Blue (#4984B8) |
| Black text | 5.18:1 |
| White text | 4.05:1 |
Values
| HEX | #667AC8 |
| RGB | rgb(102, 122, 200) |
| HSL | hsl(228, 47%, 59%) |
| OKLCH | oklch(59.9% 0.121 271.5) |
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 #667AC8 | 4.05:1 | AA large text | Lc -73.1 | Content text, not long reading |
| Black text on #667AC8 | 5.18:1 | AA | Lc 36.5 | Non-text elements, placeholder text |
| #667AC8 text on white | 4.05:1 | AA large text | Lc 67.6 | Content text, not long reading |
| #667AC8 text on black | 5.18:1 | AA | Lc -34.0 | 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 500.
-
Step 50
50
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E5E9F6
oklch(93.5% 0.018 272.3)
-
Step 200
200
#D1D8F0
oklch(88.4% 0.034 272.8)
-
Step 300
300
#B2BFE8
oklch(80.8% 0.06 271.2)
-
Step 400
400
#8B9DDC
oklch(70.6% 0.095 271.6)
-
Step 500
500 (this color)
#667AC8
oklch(59.9% 0.121 271.5)
-
Step 600
600
#586CC0
oklch(55.6% 0.132 271.4)
-
Step 700
700
#485AA6
oklch(49.1% 0.123 271.2)
-
Step 800
800
#3B4A86
oklch(42.7% 0.101 271)
-
Step 900
900
#333E6B
oklch(37.7% 0.078 271.8)
-
Step 950
950
#1E253F
oklch(27.1% 0.049 271.4)
#667AC8 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) | #5C83CB | 0.025 |
| Deuteranopia (no green cones) | #527AC6 | 0.024 |
| Tritanopia (no blue cones) | #3E8A97 | 0.108 |
| Achromatopsia (no color) | #7E7E7E | 0.121 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #667AC8
#667AC8
oklch(59.9% 0.121 271.5)
- #9A7C05
#9A7C05
oklch(59.8% 0.121 91.5)
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 #667AC8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Blue #4984B8 ΔE 0.051
- Windows Blue #3778BF ΔE 0.053
- Steel Blue #4682B4 ΔE 0.055
- Soft Blue #6488EA ΔE 0.057
- Off Blue #5684AE ΔE 0.058
- Faded Blue #658CBB ΔE 0.058
- Dusty Blue #5A86AD ΔE 0.061
- Dark Sky Blue #448EE4 ΔE 0.065
Use #667AC8 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.