#3859C4
Closest named color: Warm Blue (#4B57DB). oklch(50.2% 0.171 267), rgb(56, 89, 196).
Aa
White text reads best on this color (6.18:1).
About this color
#3859C4 is a medium-dark, vivid blue. In OKLCH its lightness is 50%, its chroma 0.171 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.043 away. White text reads best on it, at 6.18:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.171) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.39:1 |
| White text | 6.18:1 |
Values
| HEX | #3859C4 |
| RGB | rgb(56, 89, 196) |
| HSL | hsl(226, 56%, 49%) |
| OKLCH | oklch(50.2% 0.171 267) |
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 #3859C4 | 6.18:1 | AA | Lc -85.6 | Fine for body text |
| Black text on #3859C4 | 3.39:1 | AA large text | Lc 23.6 | Dividers and decoration only |
| #3859C4 text on white | 6.18:1 | AA | Lc 80.4 | Fine for body text |
| #3859C4 text on black | 3.39:1 | AA large text | Lc -21.4 | 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 700.
-
Step 50
50
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E3EAFB
oklch(93.7% 0.024 267.9)
-
Step 200
200
#CBD9F9
oklch(88.5% 0.047 266.7)
-
Step 300
300
#A9C0F7
oklch(81% 0.082 266.9)
-
Step 400
400
#7B9DF3
oklch(70.7% 0.132 266.7)
-
Step 500
500
#5B81EF
oklch(63% 0.17 267.1)
-
Step 600
600
#4368DE
oklch(55.7% 0.185 267)
-
Step 700
700 (this color)
#3859C4
oklch(50.2% 0.171 267)
-
Step 800
800
#2C479C
oklch(42.8% 0.142 266.9)
-
Step 900
900
#273C7C
oklch(37.6% 0.112 267.2)
-
Step 950
950
#172448
oklch(27% 0.069 266.8)
#3859C4 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) | #0068C8 | 0.043 |
| Deuteranopia (no green cones) | #005BC2 | 0.032 |
| Tritanopia (no blue cones) | #007386 | 0.137 |
| Achromatopsia (no color) | #616161 | 0.172 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3859C4
#3859C4
oklch(50.2% 0.171 267)
- #7D5F00
#7D5F00
oklch(50.2% 0.103 87)
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 #3859C4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.043
- Iris #6258C4 ΔE 0.055
- Mid Blue #276AB3 ΔE 0.055
- Royal Blue #4169E1 ΔE 0.060
- Blue Blue #2242C7 ΔE 0.062
- Azul #1D5DEC ΔE 0.064
- French Blue #436BAD ΔE 0.066
- Dark Periwinkle #665FD1 ΔE 0.067
Use #3859C4 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.