#669BCE
Closest named color: Faded Blue (#658CBB). oklch(67.3% 0.095 248.5), rgb(102, 155, 206).
Aa
Black text reads best on this color (7.14:1).
About this color
#669BCE is a medium-light, moderately saturated blue. In OKLCH its lightness is 67%, its chroma 0.095 and its hue 248°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.045 away. Black text reads best on it, at 7.14:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.095) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 7.14:1 |
| White text | 2.93:1 |
Values
| HEX | #669BCE |
| RGB | rgb(102, 155, 206) |
| HSL | hsl(209, 51%, 60%) |
| OKLCH | oklch(67.3% 0.095 248.5) |
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 #669BCE | 2.93:1 | Fails | Lc -61.1 | Content text, not long reading |
| Black text on #669BCE | 7.14:1 | AAA | Lc 48.3 | Large or bold text, headings |
| #669BCE text on white | 2.93:1 | Fails | Lc 55.7 | Large or bold text, headings |
| #669BCE text on black | 7.14:1 | AAA | Lc -46.0 | 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 400.
-
Step 50
50
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E1EBF5
oklch(93.5% 0.017 248)
-
Step 200
200
#C9DCEE
oklch(88.6% 0.032 246.7)
-
Step 300
300
#A3C5E6
oklch(81% 0.059 247.8)
-
Step 400
400 (this color)
#669BCE
oklch(67.3% 0.095 248.5)
-
Step 500
500
#488ECF
oklch(63% 0.121 248.8)
-
Step 600
600
#2577BC
oklch(55.5% 0.132 248.6)
-
Step 700
700
#1664A2
oklch(49.1% 0.122 248.3)
-
Step 800
800
#175283
oklch(42.7% 0.1 248.2)
-
Step 900
900
#1A4469
oklch(37.6% 0.079 248.2)
-
Step 950
950
#11283E
oklch(27% 0.05 249.3)
#669BCE 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) | #869CD0 | 0.038 |
| Deuteranopia (no green cones) | #7992CD | 0.030 |
| Tritanopia (no blue cones) | #32A7AC | 0.082 |
| Achromatopsia (no color) | #979797 | 0.095 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #669BCE
#669BCE
oklch(67.3% 0.095 248.5)
- #BD8B53
#BD8B53
oklch(67.3% 0.095 68.1)
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 #669BCE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.045
- Greyblue #77A1B5 ΔE 0.049
- Cornflower Blue #6495ED ΔE 0.053
- Silver Lake Blue #778DA9 ΔE 0.059
- Chefchaouen Blue #4895EF ΔE 0.062
- Cool Gray #8D99AE ΔE 0.063
- Bluegrey #85A3B2 ΔE 0.064
- Bluey Grey #89A0B0 ΔE 0.064
Use #669BCE 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.