#669AC6
Closest named color: Faded Blue (#658CBB). oklch(66.7% 0.086 245.1), rgb(102, 154, 198).
Aa
Black text reads best on this color (7.00:1).
About this color
#669AC6 is a medium-light, moderately saturated blue. In OKLCH its lightness is 67%, its chroma 0.086 and its hue 245°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.039 away. Black text reads best on it, at 7.00:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.086) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 7.00:1 |
| White text | 2.99:1 |
Values
| HEX | #669AC6 |
| RGB | rgb(102, 154, 198) |
| HSL | hsl(208, 46%, 59%) |
| OKLCH | oklch(66.7% 0.086 245.1) |
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 #669AC6 | 2.99:1 | Fails | Lc -61.9 | Content text, not long reading |
| Black text on #669AC6 | 7.00:1 | AAA | Lc 47.5 | Large or bold text, headings |
| #669AC6 text on white | 2.99:1 | Fails | Lc 56.6 | Large or bold text, headings |
| #669AC6 text on black | 7.00:1 | AAA | Lc -45.2 | Large or bold text, headings |
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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF2
oklch(93.6% 0.013 244.3)
-
Step 200
200
#CDDBE8
oklch(88.5% 0.023 246.1)
-
Step 300
300
#ABC4DB
oklch(80.9% 0.042 246.1)
-
Step 400
400
#7DA6C8
oklch(70.8% 0.067 243.9)
-
Step 500
500 (this color)
#669AC6
oklch(66.7% 0.086 245.1)
-
Step 600
600
#4078A6
oklch(55.5% 0.093 245.4)
-
Step 700
700
#31658F
oklch(49.1% 0.088 245.3)
-
Step 800
800
#2A5374
oklch(42.8% 0.072 244.9)
-
Step 900
900
#26455D
oklch(37.8% 0.055 243.4)
-
Step 950
950
#172837
oklch(26.9% 0.036 246.3)
#669AC6 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) | #889AC8 | 0.041 |
| Deuteranopia (no green cones) | #7B91C5 | 0.032 |
| Tritanopia (no blue cones) | #39A4A9 | 0.071 |
| Achromatopsia (no color) | #959595 | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #669AC6
#669AC6
oklch(66.7% 0.086 245.1)
- #B9895A
#B9895A
oklch(66.6% 0.086 64.8)
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 #669AC6, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.039
- Greyblue #77A1B5 ΔE 0.042
- Silver Lake Blue #778DA9 ΔE 0.049
- Blue Grey #758DA3 ΔE 0.055
- Cool Gray #8D99AE ΔE 0.056
- Bluegrey #85A3B2 ΔE 0.058
- Bluey Grey #89A0B0 ΔE 0.058
- Cadet Blue #5F9EA0 ΔE 0.064
Use #669AC6 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.