#669ACD
Closest named color: Faded Blue (#658CBB). oklch(67% 0.094 248.9), rgb(102, 154, 205).
Aa
Black text reads best on this color (7.06:1).
About this color
#669ACD is a medium-light, moderately saturated blue. In OKLCH its lightness is 67%, its chroma 0.094 and its hue 249°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.042 away. Black text reads best on it, at 7.06:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.094) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 7.06:1 |
| White text | 2.97:1 |
Values
| HEX | #669ACD |
| RGB | rgb(102, 154, 205) |
| HSL | hsl(210, 51%, 60%) |
| OKLCH | oklch(67% 0.094 248.9) |
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 #669ACD | 2.97:1 | Fails | Lc -61.5 | Content text, not long reading |
| Black text on #669ACD | 7.06:1 | AAA | Lc 47.9 | Large or bold text, headings |
| #669ACD text on white | 2.97:1 | Fails | Lc 56.2 | Large or bold text, headings |
| #669ACD text on black | 7.06:1 | AAA | Lc -45.6 | 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
#C9DBEE
oklch(88.4% 0.033 249.6)
-
Step 300
300
#A4C4E6
oklch(80.8% 0.059 250.1)
-
Step 400
400 (this color)
#669ACD
oklch(67% 0.094 248.9)
-
Step 500
500
#498ECF
oklch(63.1% 0.121 249.1)
-
Step 600
600
#2777BC
oklch(55.6% 0.131 248.9)
-
Step 700
700
#1964A2
oklch(49.2% 0.122 248.8)
-
Step 800
800
#185283
oklch(42.8% 0.1 248.5)
-
Step 900
900
#1B4469
oklch(37.7% 0.078 248.6)
-
Step 950
950
#11283E
oklch(27% 0.05 249.3)
#669ACD 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) | #859BCF | 0.037 |
| Deuteranopia (no green cones) | #7891CC | 0.030 |
| Tritanopia (no blue cones) | #33A6AB | 0.082 |
| Achromatopsia (no color) | #969696 | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #669ACD
#669ACD
oklch(67% 0.094 248.9)
- #BB8A52
#BB8A52
oklch(66.9% 0.094 68.7)
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 #669ACD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.042
- Greyblue #77A1B5 ΔE 0.050
- Cornflower Blue #6495ED ΔE 0.053
- Silver Lake Blue #778DA9 ΔE 0.057
- Chefchaouen Blue #4895EF ΔE 0.061
- Cool Gray #8D99AE ΔE 0.062
- Dark Sky Blue #448EE4 ΔE 0.063
- Blue Grey #758DA3 ΔE 0.064
Use #669ACD 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.