#66A2ED
Closest named color: Cornflower Blue (#6495ED). oklch(70.3% 0.127 254.7), rgb(102, 162, 237).
Aa
Black text reads best on this color (7.95:1).
About this color
#66A2ED is a medium-light, moderately saturated blue. In OKLCH its lightness is 70%, its chroma 0.127 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.035 away. Black text reads best on it, at 7.95:1.
| Hue family | Blues |
| Lightness | medium-light (70%) |
| Chroma | moderately saturated (0.127) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 7.95:1 |
| White text | 2.63:1 |
Values
| HEX | #66A2ED |
| RGB | rgb(102, 162, 237) |
| HSL | hsl(213, 79%, 66%) |
| OKLCH | oklch(70.3% 0.127 254.7) |
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 #66A2ED | 2.63:1 | Fails | Lc -56.4 | Large or bold text, headings |
| Black text on #66A2ED | 7.95:1 | AAA | Lc 52.8 | Large or bold text, headings |
| #66A2ED text on white | 2.63:1 | Fails | Lc 51.2 | Large or bold text, headings |
| #66A2ED text on black | 7.95:1 | AAA | Lc -50.7 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E0EBF9
oklch(93.6% 0.022 254.4)
-
Step 200
200
#C6DBF7
oklch(88.5% 0.045 255.6)
-
Step 300
300
#9EC4F4
oklch(81% 0.08 254.5)
-
Step 400
400 (this color)
#66A2ED
oklch(70.3% 0.127 254.7)
-
Step 500
500
#3A8AE9
oklch(63.1% 0.163 254.8)
-
Step 600
600
#0B71D7
oklch(55.5% 0.177 254.9)
-
Step 700
700
#005FB8
oklch(49.1% 0.16 254.6)
-
Step 800
800
#044E97
oklch(42.8% 0.136 254.5)
-
Step 900
900
#114178
oklch(37.6% 0.106 254.9)
-
Step 950
950
#0C2746
oklch(27.1% 0.066 254)
#66A2ED 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) | #83A6F0 | 0.035 |
| Deuteranopia (no green cones) | #7299EB | 0.025 |
| Tritanopia (no blue cones) | #00B3BD | 0.110 |
| Achromatopsia (no color) | #9F9F9F | 0.127 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66A2ED
#66A2ED
oklch(70.3% 0.127 254.7)
- #CD9336
#CD9336
oklch(70.4% 0.127 75.3)
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 #66A2ED, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.035
- Chefchaouen Blue #4895EF ΔE 0.048
- Periwinkle Blue #8F99FB ΔE 0.057
- Dark Sky Blue #448EE4 ΔE 0.066
- Perrywinkle #8F8CE7 ΔE 0.069
- Soft Blue #6488EA ΔE 0.069
- Carolina Blue #8AB8FE ΔE 0.076
- Lavender Blue #8B88F8 ΔE 0.080
Use #66A2ED 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.