#3954CB#3954CB

#3954CB is a mid, vivid blue. Relative luminance 0.115; OKLCH L 49.8% C 0.187 H 268.8°. Best body text is #FFFFFF at 6.36:1 contrast (WCAG AA passes).

Color values

HEX	#3954CB
RGB	rgb(57, 84, 203)
HSL	hsl(229, 58%, 51%)
HSV	hsv(229, 72%, 80%)
CMYK	cmyk(71.9%, 58.6%, 0%, 20.4%)
CIE-LAB	lab(40.44, 30.66, -64.70)
CIE-LCH	lch(40.44, 71.60, 295.35°)
OKLab	oklab(49.83% -0.0038 -0.1867)
OKLCH	oklch(49.83% 0.187 268.8)
XYZ	xyz(15.6334, 11.5207, 57.8881)
Luminance	0.1152 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3954CB #CBB039

analogous

#399DCB #3954CB #6739CB

triadic

#3954CB #CB3954 #54CB39

tetradic

#3954CB #CB399D #CBB039 #39CB67

square

#3954CB #CB399D #CBB039 #39CB67

split-complementary

#3954CB #CB6739 #9DCB39

monochromatic

#1D2B6D #293F9D #3954CB #697ED8 #9AA8E4

Accessibility & contrast

On white

6.36

#3954CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.30

#3954CB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3954CB

6.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3954CB	#FFFFFF	#000000	##FFFFFF
##3954CB	1.00	6.36	3.30	6.36
#FFFFFF	6.36	1.00	21.00	1.00
#000000	3.30	21.00	1.00	21.00
##FFFFFF	6.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0066CF

Deuteranopia (green-blind)

#0059C9

Tritanopia (blue-blind)

#007287

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #3954cb;
/* rgb */ color: rgb(57, 84, 203);
/* oklch */ color: oklch(49.8% 0.187 268.8);

Tailwind

colors: {
  custom: {
    50: '#8383dc',
    500: '#3954cb',
    950: '#000000',
  },
}

SCSS

$custom: #3954cb;
$custom-light: #8383dc;
$custom-dark: #000000;

JSON

{
  "hex": "#3954cb",
  "rgb": {
    "r": 57,
    "g": 84,
    "b": 203
  },
  "hsl": {
    "h": 228.904,
    "s": 58.4,
    "l": 50.98
  },
  "oklch": {
    "l": 0.49832,
    "c": 0.18671,
    "h": 268.8
  },
  "luminance": 0.11522
}

Semantic roles & 50–950 ramp

primary

#3954CB

secondary

#D0C490

accent

#C546E2

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0A15

muted

#7D7C83

Preview Lab

Preview with #3954CB

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →