#669EE6
Closest named color: Cornflower Blue (#6495ED). oklch(69.1% 0.122 255.3), rgb(102, 158, 230).
Aa
Black text reads best on this color (7.59:1).
About this color
#669EE6 is a medium-light, moderately saturated blue. In OKLCH its lightness is 69%, its chroma 0.122 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.029 away. Black text reads best on it, at 7.59:1.
| Hue family | Blues |
| Lightness | medium-light (69%) |
| Chroma | moderately saturated (0.122) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 7.59:1 |
| White text | 2.76:1 |
Values
| HEX | #669EE6 |
| RGB | rgb(102, 158, 230) |
| HSL | hsl(214, 72%, 65%) |
| OKLCH | oklch(69.1% 0.122 255.3) |
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 #669EE6 | 2.76:1 | Fails | Lc -58.4 | Large or bold text, headings |
| Black text on #669EE6 | 7.59:1 | AAA | Lc 50.8 | Large or bold text, headings |
| #669EE6 text on white | 2.76:1 | Fails | Lc 53.2 | Large or bold text, headings |
| #669EE6 text on black | 7.59:1 | AAA | Lc -48.7 | 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
#E0EBF9
oklch(93.6% 0.022 254.4)
-
Step 200
200
#C7DBF5
oklch(88.5% 0.042 255)
-
Step 300
300
#A0C3F2
oklch(80.8% 0.077 255.9)
-
Step 400
400 (this color)
#669EE6
oklch(69.1% 0.122 255.3)
-
Step 500
500
#408AE5
oklch(63.1% 0.156 255.2)
-
Step 600
600
#1A72D3
oklch(55.7% 0.169 255)
-
Step 700
700
#0A5FB7
oklch(49.2% 0.157 255.1)
-
Step 800
800
#0F4E94
oklch(42.8% 0.13 255.1)
-
Step 900
900
#164176
oklch(37.6% 0.102 255.6)
-
Step 950
950
#0E2745
oklch(27.1% 0.064 254.6)
#669EE6 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) | #81A2E9 | 0.034 |
| Deuteranopia (no green cones) | #7096E5 | 0.022 |
| Tritanopia (no blue cones) | #00AEB8 | 0.107 |
| Achromatopsia (no color) | #9B9B9B | 0.122 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #669EE6
#669EE6
oklch(69.1% 0.122 255.3)
- #C79038
#C79038
oklch(69.1% 0.122 75.6)
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 #669EE6, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.029
- Chefchaouen Blue #4895EF ΔE 0.043
- Dark Sky Blue #448EE4 ΔE 0.057
- Periwinkle Blue #8F99FB ΔE 0.061
- Soft Blue #6488EA ΔE 0.061
- Perrywinkle #8F8CE7 ΔE 0.064
- Faded Blue #658CBB ΔE 0.072
- Greyblue #77A1B5 ΔE 0.078
Use #669EE6 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.