#66A2FB
Closest named color: Cornflower Blue (#6495ED). oklch(71.1% 0.145 258.1), rgb(102, 162, 251).
Aa
Black text reads best on this color (8.12:1).
About this color
#66A2FB is a medium-light, vivid blue. In OKLCH its lightness is 71%, its chroma 0.145 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.037 away. Black text reads best on it, at 8.12:1.
| Hue family | Blues |
| Lightness | medium-light (71%) |
| Chroma | vivid (0.145) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 8.12:1 |
| White text | 2.58:1 |
Values
| HEX | #66A2FB |
| RGB | rgb(102, 162, 251) |
| HSL | hsl(216, 95%, 69%) |
| OKLCH | oklch(71.1% 0.145 258.1) |
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 #66A2FB | 2.58:1 | Fails | Lc -55.4 | Large or bold text, headings |
| Black text on #66A2FB | 8.12:1 | AAA | Lc 53.7 | Large or bold text, headings |
| #66A2FB text on white | 2.58:1 | Fails | Lc 50.3 | Large or bold text, headings |
| #66A2FB text on black | 8.12:1 | AAA | Lc -51.6 | 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
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#DFEBFC
oklch(93.6% 0.026 257)
-
Step 200
200
#C5DBFB
oklch(88.5% 0.05 257.7)
-
Step 300
300
#9CC3FB
oklch(80.9% 0.09 257.4)
-
Step 400
400 (this color)
#66A2FB
oklch(71.1% 0.145 258.1)
-
Step 500
500
#3786F7
oklch(63.1% 0.186 258)
-
Step 600
600
#096CE6
oklch(55.5% 0.202 258.2)
-
Step 700
700
#005AC5
oklch(49.1% 0.183 258.1)
-
Step 800
800
#044AA2
oklch(42.8% 0.156 258.2)
-
Step 900
900
#103F80
oklch(37.7% 0.121 258)
-
Step 950
950
#0B254B
oklch(26.9% 0.077 258.3)
#66A2FB 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) | #7CA9FF | 0.032 |
| Deuteranopia (no green cones) | #699BF9 | 0.018 |
| Tritanopia (no blue cones) | #00B6C3 | 0.123 |
| Achromatopsia (no color) | #A1A1A1 | 0.145 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66A2FB
#66A2FB
oklch(71.1% 0.145 258.1)
- #D3940F
#D3940F
oklch(71% 0.145 77.7)
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 #66A2FB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.037
- Chefchaouen Blue #4895EF ΔE 0.049
- Periwinkle Blue #8F99FB ΔE 0.050
- Soft Blue #6488EA ΔE 0.069
- Perrywinkle #8F8CE7 ΔE 0.070
- Dark Sky Blue #448EE4 ΔE 0.071
- Lavender Blue #8B88F8 ΔE 0.073
- Carolina Blue #8AB8FE ΔE 0.074
Use #66A2FB 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.