#669ADA
Closest named color: Cornflower Blue (#6495ED). oklch(67.6% 0.111 254.3), rgb(102, 154, 218).
Aa
Black text reads best on this color (7.19:1).
About this color
#669ADA is a medium-light, moderately saturated blue. In OKLCH its lightness is 68%, its chroma 0.111 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.034 away. Black text reads best on it, at 7.19:1.
| Hue family | Blues |
| Lightness | medium-light (68%) |
| Chroma | moderately saturated (0.111) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 7.19:1 |
| White text | 2.91:1 |
Values
| HEX | #669ADA |
| RGB | rgb(102, 154, 218) |
| HSL | hsl(213, 61%, 63%) |
| OKLCH | oklch(67.6% 0.111 254.3) |
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 #669ADA | 2.91:1 | Fails | Lc -60.7 | Content text, not long reading |
| Black text on #669ADA | 7.19:1 | AAA | Lc 48.6 | Large or bold text, headings |
| #669ADA text on white | 2.91:1 | Fails | Lc 55.4 | Large or bold text, headings |
| #669ADA text on black | 7.19:1 | AAA | Lc -46.4 | 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
#C8DBF3
oklch(88.5% 0.039 254.3)
-
Step 300
300
#A2C4ED
oklch(81% 0.069 253.4)
-
Step 400
400 (this color)
#669ADA
oklch(67.6% 0.111 254.3)
-
Step 500
500
#478BDC
oklch(63% 0.141 254.3)
-
Step 600
600
#2573CA
oklch(55.5% 0.154 254.3)
-
Step 700
700
#1760AF
oklch(49% 0.143 254.4)
-
Step 800
800
#174F8E
oklch(42.7% 0.119 254.5)
-
Step 900
900
#1A4271
oklch(37.7% 0.092 254.4)
-
Step 950
950
#102742
oklch(27% 0.058 253.9)
#669ADA 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) | #809DDD | 0.032 |
| Deuteranopia (no green cones) | #7292D9 | 0.024 |
| Tritanopia (no blue cones) | #23A8B1 | 0.096 |
| Achromatopsia (no color) | #979797 | 0.111 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #669ADA
#669ADA
oklch(67.6% 0.111 254.3)
- #BF8C42
#BF8C42
oklch(67.5% 0.11 74.1)
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 #669ADA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.034
- Chefchaouen Blue #4895EF ΔE 0.046
- Dark Sky Blue #448EE4 ΔE 0.053
- Faded Blue #658CBB ΔE 0.054
- Soft Blue #6488EA ΔE 0.059
- Perrywinkle #8F8CE7 ΔE 0.066
- Greyblue #77A1B5 ΔE 0.066
- Periwinkle Blue #8F99FB ΔE 0.072
Use #669ADA 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.