#669BEA
Closest named color: Cornflower Blue (#6495ED). oklch(68.7% 0.13 258.2), rgb(102, 155, 234).
Aa
Black text reads best on this color (7.44:1).
About this color
#669BEA is a medium-light, moderately saturated blue. In OKLCH its lightness is 69%, its chroma 0.130 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.018 away. Black text reads best on it, at 7.44:1.
| Hue family | Blues |
| Lightness | medium-light (69%) |
| Chroma | moderately saturated (0.130) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 7.44:1 |
| White text | 2.82:1 |
Values
| HEX | #669BEA |
| RGB | rgb(102, 155, 234) |
| HSL | hsl(216, 76%, 66%) |
| OKLCH | oklch(68.7% 0.13 258.2) |
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 #669BEA | 2.82:1 | Fails | Lc -59.3 | Large or bold text, headings |
| Black text on #669BEA | 7.44:1 | AAA | Lc 50.0 | Large or bold text, headings |
| #669BEA text on white | 2.82:1 | Fails | Lc 54.0 | Large or bold text, headings |
| #669BEA text on black | 7.44:1 | AAA | Lc -47.8 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E0EBFA
oklch(93.6% 0.024 256.1)
-
Step 200
200
#C7DBF8
oklch(88.6% 0.046 257.6)
-
Step 300
300
#A0C3F5
oklch(80.9% 0.081 257.3)
-
Step 400
400 (this color)
#669BEA
oklch(68.7% 0.13 258.2)
-
Step 500
500
#4388EC
oklch(63.2% 0.166 257.9)
-
Step 600
600
#216FDA
oklch(55.6% 0.18 257.9)
-
Step 700
700
#135CBD
oklch(49.1% 0.167 258)
-
Step 800
800
#144C99
oklch(42.8% 0.138 258)
-
Step 900
900
#18407A
oklch(37.7% 0.109 258.1)
-
Step 950
950
#0F2647
oklch(27% 0.068 257.7)
#669BEA 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) | #7BA1ED | 0.030 |
| Deuteranopia (no green cones) | #6A94E8 | 0.018 |
| Tritanopia (no blue cones) | #00ADB8 | 0.115 |
| Achromatopsia (no color) | #9A9A9A | 0.130 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #669BEA
#669BEA
oklch(68.7% 0.13 258.2)
- #C68F28
#C68F28
oklch(68.7% 0.13 78.1)
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 #669BEA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.018
- Chefchaouen Blue #4895EF ΔE 0.035
- Dark Sky Blue #448EE4 ΔE 0.051
- Soft Blue #6488EA ΔE 0.051
- Periwinkle Blue #8F99FB ΔE 0.056
- Perrywinkle #8F8CE7 ΔE 0.059
- Lavender Blue #8B88F8 ΔE 0.069
- Dodger Blue #1E90FF ΔE 0.071
Use #669BEA 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.