#669AE3
Closest named color: Cornflower Blue (#6495ED). oklch(68.1% 0.122 257), rgb(102, 154, 227).
Aa
Black text reads best on this color (7.29:1).
About this color
#669AE3 is a medium-light, moderately saturated blue. In OKLCH its lightness is 68%, its chroma 0.122 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.023 away. Black text reads best on it, at 7.29:1.
| Hue family | Blues |
| Lightness | medium-light (68%) |
| Chroma | moderately saturated (0.122) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 7.29:1 |
| White text | 2.87:1 |
Values
| HEX | #669AE3 |
| RGB | rgb(102, 154, 227) |
| HSL | hsl(215, 69%, 65%) |
| OKLCH | oklch(68.1% 0.122 257) |
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 #669AE3 | 2.87:1 | Fails | Lc -60.2 | Content text, not long reading |
| Black text on #669AE3 | 7.29:1 | AAA | Lc 49.2 | Large or bold text, headings |
| #669AE3 text on white | 2.87:1 | Fails | Lc 54.9 | Large or bold text, headings |
| #669AE3 text on black | 7.29:1 | AAA | Lc -47.0 | 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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E1EBF9
oklch(93.7% 0.022 256.7)
-
Step 200
200
#C8DBF6
oklch(88.6% 0.043 257.1)
-
Step 300
300
#A1C3F2
oklch(80.9% 0.076 256.6)
-
Step 400
400 (this color)
#669AE3
oklch(68.1% 0.122 257)
-
Step 500
500
#4589E6
oklch(63.1% 0.156 256.9)
-
Step 600
600
#2471D4
oklch(55.7% 0.169 256.8)
-
Step 700
700
#165EB8
oklch(49.2% 0.158 256.9)
-
Step 800
800
#164D95
oklch(42.8% 0.131 257.1)
-
Step 900
900
#194176
oklch(37.7% 0.101 256.6)
-
Step 950
950
#102645
oklch(26.9% 0.064 257.3)
#669AE3 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) | #7C9FE6 | 0.030 |
| Deuteranopia (no green cones) | #6D93E1 | 0.019 |
| Tritanopia (no blue cones) | #0FAAB4 | 0.108 |
| Achromatopsia (no color) | #989898 | 0.122 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #669AE3
#669AE3
oklch(68.1% 0.122 257)
- #C28E33
#C28E33
oklch(68.1% 0.122 77.6)
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 #669AE3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.023
- Chefchaouen Blue #4895EF ΔE 0.037
- Dark Sky Blue #448EE4 ΔE 0.049
- Soft Blue #6488EA ΔE 0.052
- Perrywinkle #8F8CE7 ΔE 0.060
- Periwinkle Blue #8F99FB ΔE 0.063
- Faded Blue #658CBB ΔE 0.064
- Lavender Blue #8B88F8 ΔE 0.074
Use #669AE3 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.