#3A7EF2
Closest named color: Clear Blue (#247AFD). oklch(61.2% 0.188 260.4), rgb(58, 126, 242).
Aa
Black text reads best on this color (5.44:1).
About this color
#3A7EF2 is a medium-dark, vivid blue. In OKLCH its lightness is 61%, its chroma 0.188 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Clear Blue (#247AFD), ΔE 0.025 away. Black text reads best on it, at 5.44:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.188) |
| Temperature | cool |
| Nearest name | Clear Blue (#247AFD) |
| Black text | 5.44:1 |
| White text | 3.85:1 |
Values
| HEX | #3A7EF2 |
| RGB | rgb(58, 126, 242) |
| HSL | hsl(218, 88%, 59%) |
| OKLCH | oklch(61.2% 0.188 260.4) |
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 #3A7EF2 | 3.85:1 | AA large text | Lc -71.1 | Content text, not long reading |
| Black text on #3A7EF2 | 5.44:1 | AA | Lc 38.5 | Non-text elements, placeholder text |
| #3A7EF2 text on white | 3.85:1 | AA large text | Lc 65.6 | Content text, not long reading |
| #3A7EF2 text on black | 5.44:1 | AA | Lc -36.1 | 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
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E0EBFC
oklch(93.7% 0.026 259)
-
Step 200
200
#C6DAFC
oklch(88.4% 0.052 261.1)
-
Step 300
300
#9EC2FC
oklch(80.9% 0.091 259.8)
-
Step 400
400
#699FFB
oklch(70.6% 0.147 260.5)
-
Step 500
500 (this color)
#3A7EF2
oklch(61.2% 0.188 260.4)
-
Step 600
600
#1E6AE8
oklch(55.6% 0.205 260.4)
-
Step 700
700
#1057CA
oklch(49% 0.191 260.5)
-
Step 800
800
#1148A3
oklch(42.6% 0.158 260.4)
-
Step 900
900
#163E81
oklch(37.7% 0.122 260.2)
-
Step 950
950
#0E254C
oklch(27.1% 0.078 260.3)
#3A7EF2 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) | #3B8BF6 | 0.034 |
| Deuteranopia (no green cones) | #007AF0 | 0.028 |
| Tritanopia (no blue cones) | #009AAC | 0.147 |
| Achromatopsia (no color) | #828282 | 0.188 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A7EF2
#3A7EF2
oklch(61.2% 0.188 260.4)
- #AB7A00
#AB7A00
oklch(61.3% 0.127 80.4)
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 #3A7EF2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Clear Blue #247AFD ΔE 0.025
- Dodger Blue #1E90FF ΔE 0.047
- Cornflower #6A79F7 ΔE 0.049
- Dark Sky Blue #448EE4 ΔE 0.052
- Cerulean Blue #056EEE ΔE 0.052
- Soft Blue #6488EA ΔE 0.053
- Royal Blue #4169E1 ΔE 0.056
- Chefchaouen Blue #4895EF ΔE 0.064
Use #3A7EF2 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.