#3781AD#3781AD

#3781AD is a mid, moderate cyan. Relative luminance 0.195; OKLCH L 57.6% C 0.099 H 238.1°. Best body text is #000000 at 4.91:1 contrast (WCAG AA passes).

Color values

HEX	#3781AD
RGB	rgb(55, 129, 173)
HSL	hsl(202, 52%, 45%)
HSV	hsv(202, 68%, 68%)
CMYK	cmyk(68.2%, 25.4%, 0%, 32.2%)
CIE-LAB	lab(51.30, -8.56, -30.02)
CIE-LCH	lch(51.30, 31.21, 254.08°)
OKLab	oklab(57.62% -0.0525 -0.0845)
OKLCH	oklch(57.62% 0.099 238.1)
XYZ	xyz(16.9657, 19.5281, 42.4022)
Luminance	0.1953 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3781AD #AD6337

analogous

#37AD9E #3781AD #3746AD

triadic

#3781AD #AD3781 #81AD37

tetradic

#3781AD #9E37AD #AD6337 #46AD37

square

#3781AD #9E37AD #AD6337 #46AD37

split-complementary

#3781AD #AD3746 #AD9E37

monochromatic

#193C50 #285E7F #3781AD #579FCA #86BAD8

Accessibility & contrast

On white

4.28

#3781AD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.91

#3781AD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3781AD

4.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3781AD	#FFFFFF	#000000	##000000
##3781AD	1.00	4.28	4.91	4.91
#FFFFFF	4.28	1.00	21.00	21.00
#000000	4.91	21.00	1.00	1.00
##000000	4.91	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6C81AF

Deuteranopia (green-blind)

#5C75AC

Tritanopia (blue-blind)

#008C90

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #3781ad;
/* rgb */ color: rgb(55, 129, 173);
/* oklch */ color: oklch(57.6% 0.099 238.1);

Tailwind

colors: {
  custom: {
    50: '#7ba5c5',
    500: '#3781ad',
    950: '#000000',
  },
}

SCSS

$custom: #3781ad;
$custom-light: #7ba5c5;
$custom-dark: #000000;

JSON

{
  "hex": "#3781ad",
  "rgb": {
    "r": 55,
    "g": 129,
    "b": 173
  },
  "hsl": {
    "h": 202.373,
    "s": 51.754,
    "l": 44.706
  },
  "oklch": {
    "l": 0.5762,
    "c": 0.09947,
    "h": 238.1
  },
  "luminance": 0.1953
}

Semantic roles & 50–950 ramp

primary

#3781AD

secondary

#C2977D

accent

#824DDB

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0A0F13

muted

#7C7F82

Preview Lab

Preview with #3781AD

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

Preview Lab → · Contrast checker → · Palette generator →