#427AFA
Closest named color: Clear Blue (#247AFD). oklch(61.2% 0.201 263.7), rgb(66, 122, 250).
Aa
Black text reads best on this color (5.39:1).
About this color
#427AFA is a medium-dark, vivid blue. In OKLCH its lightness is 61%, its chroma 0.201 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Clear Blue (#247AFD), ΔE 0.020 away. Black text reads best on it, at 5.39:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.201) |
| Temperature | cool |
| Nearest name | Clear Blue (#247AFD) |
| Black text | 5.39:1 |
| White text | 3.89:1 |
Values
| HEX | #427AFA |
| RGB | rgb(66, 122, 250) |
| HSL | hsl(222, 95%, 62%) |
| OKLCH | oklch(61.2% 0.201 263.7) |
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 #427AFA | 3.89:1 | AA large text | Lc -71.4 | Content text, not long reading |
| Black text on #427AFA | 5.39:1 | AA | Lc 38.2 | Non-text elements, placeholder text |
| #427AFA text on white | 3.89:1 | AA large text | Lc 65.9 | Content text, not long reading |
| #427AFA text on black | 5.39:1 | AA | Lc -35.8 | Non-text elements, placeholder text |
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 500.
-
Step 50
50
#F1F6FF
oklch(97.2% 0.013 262.4)
-
Step 100
100
#E0EAFE
oklch(93.6% 0.029 264.4)
-
Step 200
200
#C7DAFE
oklch(88.6% 0.054 263.2)
-
Step 300
300
#A1C0FF
oklch(80.8% 0.096 264.1)
-
Step 400
400
#6F9DFF
oklch(70.7% 0.152 263.9)
-
Step 500
500 (this color)
#427AFA
oklch(61.2% 0.201 263.7)
-
Step 600
600
#2C65F0
oklch(55.6% 0.218 263.8)
-
Step 700
700
#1F53D1
oklch(49.2% 0.202 263.6)
-
Step 800
800
#1B45A9
oklch(42.8% 0.167 263.6)
-
Step 900
900
#1B3B86
oklch(37.7% 0.132 263.8)
-
Step 950
950
#10234E
oklch(26.8% 0.083 263.8)
#427AFA 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) | #248AFF | 0.040 |
| Deuteranopia (no green cones) | #0079F7 | 0.032 |
| Tritanopia (no blue cones) | #0099AE | 0.159 |
| Achromatopsia (no color) | #818181 | 0.201 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #427AFA
#427AFA
oklch(61.2% 0.201 263.7)
- #A77C00
#A77C00
oklch(61.2% 0.126 84.1)
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 #427AFA, closest first.
No curated palette has a color within ΔE 0.04 of #427AFA.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Clear Blue #247AFD ΔE 0.020
- Cornflower #6A79F7 ΔE 0.042
- Cerulean Blue #056EEE ΔE 0.051
- Royal Blue #4169E1 ΔE 0.054
- Dodger Blue #1E90FF ΔE 0.055
- Soft Blue #6488EA ΔE 0.060
- Neon Blue #4361EE ΔE 0.061
- Dark Sky Blue #448EE4 ΔE 0.066
Use #427AFA 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.