#669CDA
Closest named color: Cornflower Blue (#6495ED). oklch(68.1% 0.109 252.8), rgb(102, 156, 218).
Aa
Black text reads best on this color (7.33:1).
About this color
#669CDA is a medium-light, moderately saturated blue. In OKLCH its lightness is 68%, its chroma 0.109 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.038 away. Black text reads best on it, at 7.33:1.
| Hue family | Blues |
| Lightness | medium-light (68%) |
| Chroma | moderately saturated (0.109) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 7.33:1 |
| White text | 2.86:1 |
Values
| HEX | #669CDA |
| RGB | rgb(102, 156, 218) |
| HSL | hsl(212, 61%, 63%) |
| OKLCH | oklch(68.1% 0.109 252.8) |
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 #669CDA | 2.86:1 | Fails | Lc -60.0 | Large or bold text, headings |
| Black text on #669CDA | 7.33:1 | AAA | Lc 49.4 | Large or bold text, headings |
| #669CDA text on white | 2.86:1 | Fails | Lc 54.7 | Large or bold text, headings |
| #669CDA text on black | 7.33:1 | AAA | Lc -47.1 | 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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E1EBF7
oklch(93.6% 0.019 252.9)
-
Step 200
200
#C8DBF2
oklch(88.4% 0.038 253.2)
-
Step 300
300
#A2C4EC
oklch(80.9% 0.068 252.7)
-
Step 400
400 (this color)
#669CDA
oklch(68.1% 0.109 252.8)
-
Step 500
500
#458CDB
oklch(63.1% 0.139 253)
-
Step 600
600
#2174C8
oklch(55.5% 0.151 252.8)
-
Step 700
700
#1261AD
oklch(49% 0.141 252.8)
-
Step 800
800
#14508C
oklch(42.8% 0.116 252.6)
-
Step 900
900
#184370
oklch(37.8% 0.09 252.3)
-
Step 950
950
#102742
oklch(27% 0.058 253.9)
#669CDA 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) | #839FDD | 0.036 |
| Deuteranopia (no green cones) | #7494D9 | 0.025 |
| Tritanopia (no blue cones) | #22AAB2 | 0.095 |
| Achromatopsia (no color) | #999999 | 0.109 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #669CDA
#669CDA
oklch(68.1% 0.109 252.8)
- #C18D46
#C18D46
oklch(68% 0.108 72.7)
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 #669CDA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.038
- Chefchaouen Blue #4895EF ΔE 0.049
- Faded Blue #658CBB ΔE 0.057
- Dark Sky Blue #448EE4 ΔE 0.057
- Greyblue #77A1B5 ΔE 0.063
- Soft Blue #6488EA ΔE 0.064
- Perrywinkle #8F8CE7 ΔE 0.068
- Periwinkle Blue #8F99FB ΔE 0.073
Use #669CDA 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.