#3A7AFB
Closest named color: Clear Blue (#247AFD). oklch(61% 0.204 262.3), rgb(58, 122, 251).
Aa
Black text reads best on this color (5.35:1).
About this color
#3A7AFB is a medium-dark, vivid blue. In OKLCH its lightness is 61%, its chroma 0.204 and its hue 262°. 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 5.35:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.204) |
| Temperature | cool |
| Nearest name | Clear Blue (#247AFD) |
| Black text | 5.35:1 |
| White text | 3.92:1 |
Values
| HEX | #3A7AFB |
| RGB | rgb(58, 122, 251) |
| HSL | hsl(220, 96%, 61%) |
| OKLCH | oklch(61% 0.204 262.3) |
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 #3A7AFB | 3.92:1 | AA large text | Lc -71.6 | Content text, not long reading |
| Black text on #3A7AFB | 5.35:1 | AA | Lc 38.0 | Non-text elements, placeholder text |
| #3A7AFB text on white | 3.92:1 | AA large text | Lc 66.1 | Content text, not long reading |
| #3A7AFB text on black | 5.35:1 | AA | Lc -35.6 | 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
#C6DAFF
oklch(88.5% 0.056 262.8)
-
Step 300
300
#9FC1FF
oklch(80.9% 0.096 262.2)
-
Step 400
400
#6B9EFF
oklch(70.7% 0.153 262.2)
-
Step 500
500 (this color)
#3A7AFB
oklch(61% 0.204 262.3)
-
Step 600
600
#2166F2
oklch(55.7% 0.221 262.2)
-
Step 700
700
#1453D3
oklch(49.1% 0.207 262.3)
-
Step 800
800
#1445AA
oklch(42.7% 0.17 262.4)
-
Step 900
900
#173C87
oklch(37.8% 0.133 262.3)
-
Step 950
950
#0E244F
oklch(27.1% 0.084 262)
#3A7AFB 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) | #1F8AFF | 0.039 |
| Deuteranopia (no green cones) | #0078F8 | 0.026 |
| Tritanopia (no blue cones) | #0099AF | 0.158 |
| Achromatopsia (no color) | #818181 | 0.204 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A7AFB
#3A7AFB
oklch(61% 0.204 262.3)
- #A87A00
#A87A00
oklch(60.9% 0.126 82.1)
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 #3A7AFB, closest first.
No curated palette has a color within ΔE 0.04 of #3A7AFB.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Clear Blue #247AFD ΔE 0.014
- Cerulean Blue #056EEE ΔE 0.047
- Cornflower #6A79F7 ΔE 0.049
- Dodger Blue #1E90FF ΔE 0.054
- Royal Blue #4169E1 ΔE 0.054
- Neon Blue #4361EE ΔE 0.060
- Bright Blue #0165FC ΔE 0.062
- Soft Blue #6488EA ΔE 0.065
Use #3A7AFB 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.