#3474EA
Closest named color: Cerulean Blue (#056EEE). oklch(58.4% 0.191 261.3), rgb(52, 116, 234).
Aa
Black text reads best on this color (4.83:1).
About this color
#3474EA is a medium-dark, vivid blue. In OKLCH its lightness is 58%, its chroma 0.191 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean Blue (#056EEE), ΔE 0.029 away. Black text reads best on it, at 4.83:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | vivid (0.191) |
| Temperature | cool |
| Nearest name | Cerulean Blue (#056EEE) |
| Black text | 4.83:1 |
| White text | 4.34:1 |
Values
| HEX | #3474EA |
| RGB | rgb(52, 116, 234) |
| HSL | hsl(219, 81%, 56%) |
| OKLCH | oklch(58.4% 0.191 261.3) |
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 #3474EA | 4.34:1 | AA large text | Lc -75.1 | Fine for body text |
| Black text on #3474EA | 4.83:1 | AA | Lc 34.5 | Non-text elements, placeholder text |
| #3474EA text on white | 4.34:1 | AA large text | Lc 69.6 | Content text, not long reading |
| #3474EA text on black | 4.83:1 | AA | Lc -32.1 | 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 600.
-
Step 50
50
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E1EAFB
oklch(93.5% 0.025 263.3)
-
Step 200
200
#C8DAF9
oklch(88.5% 0.047 261.4)
-
Step 300
300
#A2C2F9
oklch(81% 0.086 261.1)
-
Step 400
400
#6F9FF6
oklch(70.6% 0.138 261.6)
-
Step 500
500
#4985F2
oklch(63.2% 0.175 261.2)
-
Step 600
600 (this color)
#3474EA
oklch(58.4% 0.191 261.3)
-
Step 700
700
#1F59C3
oklch(49.2% 0.177 261.3)
-
Step 800
800
#1B499E
oklch(42.7% 0.147 261.3)
-
Step 900
900
#1C3E7D
oklch(37.6% 0.114 261.4)
-
Step 950
950
#112549
oklch(27% 0.072 261.1)
#3474EA 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) | #2782EE | 0.035 |
| Deuteranopia (no green cones) | #0071E8 | 0.025 |
| Tritanopia (no blue cones) | #0091A4 | 0.149 |
| Achromatopsia (no color) | #797979 | 0.191 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3474EA
#3474EA
oklch(58.4% 0.191 261.3)
- #9F7200
#9F7200
oklch(58.2% 0.12 81.1)
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 #3474EA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean Blue #056EEE ΔE 0.029
- Royal Blue #4169E1 ΔE 0.029
- Clear Blue #247AFD ΔE 0.031
- Neon Blue #4361EE ΔE 0.045
- Bright Blue #0165FC ΔE 0.054
- Azul #1D5DEC ΔE 0.061
- Cornflower #6A79F7 ΔE 0.063
- Windows Blue #3778BF ΔE 0.069
Use #3474EA 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.