#667BA9
Closest named color: Off Blue (#5684AE). oklch(58.5% 0.075 265.2), rgb(102, 123, 169).
Aa
Black text reads best on this color (4.97:1).
About this color
#667BA9 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 58%, its chroma 0.075 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Off Blue (#5684AE), ΔE 0.029 away. Black text reads best on it, at 4.97:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.075) |
| Temperature | cool |
| Nearest name | Off Blue (#5684AE) |
| Black text | 4.97:1 |
| White text | 4.22:1 |
Values
| HEX | #667BA9 |
| RGB | rgb(102, 123, 169) |
| HSL | hsl(221, 28%, 53%) |
| OKLCH | oklch(58.5% 0.075 265.2) |
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 #667BA9 | 4.22:1 | AA large text | Lc -74.6 | Content text, not long reading |
| Black text on #667BA9 | 4.97:1 | AA | Lc 35.0 | Non-text elements, placeholder text |
| #667BA9 text on white | 4.22:1 | AA large text | Lc 69.1 | Content text, not long reading |
| #667BA9 text on black | 4.97:1 | AA | Lc -32.5 | 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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E7EAF1
oklch(93.7% 0.01 267.4)
-
Step 200
200
#D3D9E6
oklch(88.5% 0.019 266)
-
Step 300
300
#B6C1D7
oklch(80.9% 0.033 264.4)
-
Step 400
400
#90A1C3
oklch(70.8% 0.054 264.1)
-
Step 500
500
#7589B4
oklch(63.1% 0.069 265.1)
-
Step 600
600 (this color)
#667BA9
oklch(58.5% 0.075 265.2)
-
Step 700
700
#4D6089
oklch(49.1% 0.07 264.9)
-
Step 800
800
#3F4E6F
oklch(42.6% 0.058 265.2)
-
Step 900
900
#36415A
oklch(37.7% 0.045 265.9)
-
Step 950
950
#202635
oklch(27% 0.029 267.5)
#667BA9 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) | #6B7EAB | 0.011 |
| Deuteranopia (no green cones) | #6578A8 | 0.009 |
| Tritanopia (no blue cones) | #50848B | 0.067 |
| Achromatopsia (no color) | #7B7B7B | 0.075 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #667BA9
#667BA9
oklch(58.5% 0.075 265.2)
- #907845
#907845
oklch(58.4% 0.075 84.9)
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 #667BA9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Off Blue #5684AE ΔE 0.029
- Dusty Blue #5A86AD ΔE 0.032
- Stormy Blue #507B9C ΔE 0.035
- Steel Blue #4682B4 ΔE 0.038
- Cool Blue #4984B8 ΔE 0.039
- Lavender Gray #7E7F9A ΔE 0.044
- Cerulean #457B9D ΔE 0.044
- Grey Blue #647D8E ΔE 0.045
Use #667BA9 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.