#3A5EF8
Closest named color: Neon Blue (#4361EE). oklch(55.5% 0.232 267.6), rgb(58, 94, 248).
Aa
White text reads best on this color (5.07:1).
About this color
#3A5EF8 is a medium-dark, vivid blue. In OKLCH its lightness is 55%, its chroma 0.232 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Neon Blue (#4361EE), ΔE 0.019 away. White text reads best on it, at 5.07:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.232) |
| Temperature | cool |
| Nearest name | Neon Blue (#4361EE) |
| Black text | 4.13:1 |
| White text | 5.07:1 |
Values
| HEX | #3A5EF8 |
| RGB | rgb(58, 94, 248) |
| HSL | hsl(229, 93%, 60%) |
| OKLCH | oklch(55.5% 0.232 267.6) |
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 #3A5EF8 | 5.07:1 | AA | Lc -79.7 | Fine for body text |
| Black text on #3A5EF8 | 4.13:1 | AA large text | Lc 29.8 | Dividers and decoration only |
| #3A5EF8 text on white | 5.07:1 | AA | Lc 74.3 | Content text, not long reading |
| #3A5EF8 text on black | 4.13:1 | AA large text | Lc -27.4 | Dividers and decoration only |
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 600.
-
Step 50
50
#F1F5FF
oklch(97% 0.014 268.5)
-
Step 100
100
#E1EAFF
oklch(93.7% 0.03 267.2)
-
Step 200
200
#C9D9FF
oklch(88.6% 0.055 267.2)
-
Step 300
300
#A6BFFF
oklch(80.9% 0.095 267.8)
-
Step 400
400
#779BFF
oklch(70.7% 0.152 267.5)
-
Step 500
500
#567DFF
oklch(63% 0.198 267.8)
-
Step 600
600 (this color)
#3A5EF8
oklch(55.5% 0.232 267.6)
-
Step 700
700
#2E4CD9
oklch(49.1% 0.217 267.7)
-
Step 800
800
#2640AF
oklch(42.8% 0.179 267.6)
-
Step 900
900
#22388A
oklch(37.7% 0.139 267.7)
-
Step 950
950
#142251
oklch(27.1% 0.088 267.6)
#3A5EF8 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) | #0077FD | 0.057 |
| Deuteranopia (no green cones) | #0066F5 | 0.030 |
| Tritanopia (no blue cones) | #0086A2 | 0.182 |
| Achromatopsia (no color) | #6E6E6E | 0.233 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A5EF8
#3A5EF8
oklch(55.5% 0.232 267.6)
- #8F6E00
#8F6E00
oklch(55.5% 0.114 87.7)
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 #3A5EF8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Neon Blue #4361EE ΔE 0.019
- Bright Blue #0165FC ΔE 0.029
- Azul #1D5DEC ΔE 0.029
- Cerulean Blue #056EEE ΔE 0.043
- Electric Blue #0652FF ΔE 0.044
- Royal Blue #4169E1 ΔE 0.045
- Warm Blue #4B57DB ΔE 0.049
- Clear Blue #247AFD ΔE 0.063
Use #3A5EF8 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.