#3A7AFF
Closest named color: Clear Blue (#247AFD). oklch(61.3% 0.209 262.6), rgb(58, 122, 255).
Aa
Black text reads best on this color (5.40:1).
About this color
#3A7AFF is a medium-dark, vivid blue. In OKLCH its lightness is 61%, its chroma 0.209 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Clear Blue (#247AFD), ΔE 0.014 away. Black text reads best on it, at 5.40:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.209) |
| Temperature | cool |
| Nearest name | Clear Blue (#247AFD) |
| Black text | 5.40:1 |
| White text | 3.88:1 |
Values
| HEX | #3A7AFF |
| RGB | rgb(58, 122, 255) |
| HSL | hsl(221, 100%, 61%) |
| OKLCH | oklch(61.3% 0.209 262.6) |
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 #3A7AFF | 3.88:1 | AA large text | Lc -71.2 | Content text, not long reading |
| Black text on #3A7AFF | 5.40:1 | AA | Lc 38.3 | Non-text elements, placeholder text |
| #3A7AFF text on white | 3.88:1 | AA large text | Lc 65.7 | Content text, not long reading |
| #3A7AFF text on black | 5.40:1 | AA | Lc -35.9 | 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
#DFEAFE
oklch(93.5% 0.03 262.5)
-
Step 200
200
#C6DAFF
oklch(88.5% 0.056 262.8)
-
Step 300
300
#A0C1FF
oklch(80.9% 0.095 262.7)
-
Step 400
400
#6C9EFF
oklch(70.7% 0.152 262.5)
-
Step 500
500 (this color)
#3A7AFF
oklch(61.3% 0.209 262.6)
-
Step 600
600
#2064F5
oklch(55.5% 0.227 262.6)
-
Step 700
700
#1452D6
oklch(49.2% 0.212 262.6)
-
Step 800
800
#1344AD
oklch(42.7% 0.176 262.7)
-
Step 900
900
#163B88
oklch(37.6% 0.136 262.5)
-
Step 950
950
#0E2350
oklch(26.9% 0.087 263)
#3A7AFF 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) | #138BFF | 0.042 |
| Deuteranopia (no green cones) | #0079FC | 0.025 |
| Tritanopia (no blue cones) | #009AB1 | 0.162 |
| Achromatopsia (no color) | #818181 | 0.209 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A7AFF
#3A7AFF
oklch(61.3% 0.209 262.6)
- #A97B00
#A97B00
oklch(61.2% 0.126 82.3)
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 #3A7AFF, closest first.
No curated palette has a color within ΔE 0.04 of #3A7AFF.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Clear Blue #247AFD ΔE 0.014
- Cornflower #6A79F7 ΔE 0.049
- Cerulean Blue #056EEE ΔE 0.050
- Dodger Blue #1E90FF ΔE 0.054
- Royal Blue #4169E1 ΔE 0.058
- Bright Blue #0165FC ΔE 0.062
- Neon Blue #4361EE ΔE 0.062
- Soft Blue #6488EA ΔE 0.067
Use #3A7AFF 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.