#3867E1
Closest named color: Royal Blue (#4169E1). oklch(55.2% 0.193 264.8), rgb(56, 103, 225).
Aa
White text reads best on this color (5.00:1).
About this color
#3867E1 is a medium-dark, vivid blue. In OKLCH its lightness is 55%, its chroma 0.193 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.011 away. White text reads best on it, at 5.00:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.193) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.19:1 |
| White text | 5.00:1 |
Values
| HEX | #3867E1 |
| RGB | rgb(56, 103, 225) |
| HSL | hsl(223, 74%, 55%) |
| OKLCH | oklch(55.2% 0.193 264.8) |
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 #3867E1 | 5.00:1 | AA | Lc -79.5 | Fine for body text |
| Black text on #3867E1 | 4.19:1 | AA large text | Lc 30.0 | Dividers and decoration only |
| #3867E1 text on white | 5.00:1 | AA | Lc 74.1 | Content text, not long reading |
| #3867E1 text on black | 4.19:1 | AA large text | Lc -27.6 | 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
#F2F6FE
oklch(97.2% 0.012 264.5)
-
Step 100
100
#E2EAFB
oklch(93.6% 0.025 265.6)
-
Step 200
200
#CAD9FA
oklch(88.5% 0.048 266)
-
Step 300
300
#A5C0FA
oklch(80.9% 0.088 265.1)
-
Step 400
400
#759DF7
oklch(70.6% 0.14 264.9)
-
Step 500
500
#5382F4
oklch(63.1% 0.178 264.9)
-
Step 600
600 (this color)
#3867E1
oklch(55.2% 0.193 264.8)
-
Step 700
700
#2C56C5
oklch(49.2% 0.18 264.8)
-
Step 800
800
#25479F
oklch(42.7% 0.149 264.8)
-
Step 900
900
#223D7E
oklch(37.8% 0.115 264.5)
-
Step 950
950
#14244A
oklch(27% 0.074 264.7)
#3867E1 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) | #0077E5 | 0.042 |
| Deuteranopia (no green cones) | #0068DF | 0.027 |
| Tritanopia (no blue cones) | #00859A | 0.152 |
| Achromatopsia (no color) | #6F6F6F | 0.193 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3867E1
#3867E1
oklch(55.2% 0.193 264.8)
- #906C00
#906C00
oklch(55.2% 0.113 85.4)
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 #3867E1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.011
- Neon Blue #4361EE ΔE 0.026
- Cerulean Blue #056EEE ΔE 0.031
- Azul #1D5DEC ΔE 0.037
- Warm Blue #4B57DB ΔE 0.039
- Bright Blue #0165FC ΔE 0.048
- Dark Periwinkle #665FD1 ΔE 0.059
- Clear Blue #247AFD ΔE 0.060
Use #3867E1 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.