#374DA1#374DA1

#374DA1 is a mid, vivid blue. Relative luminance 0.087; OKLCH L 45.0% C 0.138 H 269.2°. Best body text is #FFFFFF at 7.67:1 contrast (WCAG AA passes).

Color values

HEX	#374DA1
RGB	rgb(55, 77, 161)
HSL	hsl(228, 49%, 42%)
HSV	hsv(228, 66%, 63%)
CMYK	cmyk(65.8%, 52.2%, 0%, 36.9%)
CIE-LAB	lab(35.38, 19.64, -48.18)
CIE-LCH	lch(35.38, 52.03, 292.18°)
OKLab	oklab(45.03% -0.002 -0.1382)
OKLCH	oklch(45.03% 0.138 269.2)
XYZ	xyz(10.6603, 8.6922, 34.8273)
Luminance	0.0869 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#374DA1 #A18B37

analogous

#3782A1 #374DA1 #5637A1

triadic

#374DA1 #A1374D #4DA137

tetradic

#374DA1 #A13782 #A18B37 #37A156

square

#374DA1 #A13782 #A18B37 #37A156

split-complementary

#374DA1 #A15637 #82A137

monochromatic

#182146 #273773 #374DA1 #5169C4 #7F91D3

Accessibility & contrast

On white

7.67

#374DA1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.74

#374DA1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #374DA1

7.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##374DA1	#FFFFFF	#000000	##FFFFFF
##374DA1	1.00	7.67	2.74	7.67
#FFFFFF	7.67	1.00	21.00	1.00
#000000	2.74	21.00	1.00	21.00
##FFFFFF	7.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B58A4

Deuteranopia (green-blind)

#004F9F

Tritanopia (blue-blind)

#00616F

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #374da1;
/* rgb */ color: rgb(55, 77, 161);
/* oklch */ color: oklch(45.0% 0.138 269.2);

Tailwind

colors: {
  custom: {
    50: '#797ebd',
    500: '#374da1',
    950: '#000000',
  },
}

SCSS

$custom: #374da1;
$custom-light: #797ebd;
$custom-dark: #000000;

JSON

{
  "hex": "#374da1",
  "rgb": {
    "r": 55,
    "g": 77,
    "b": 161
  },
  "hsl": {
    "h": 227.547,
    "s": 49.074,
    "l": 42.353
  },
  "oklch": {
    "l": 0.45025,
    "c": 0.13824,
    "h": 269.2
  },
  "luminance": 0.08693
}

Semantic roles & 50–950 ramp

primary

#374DA1

secondary

#BDAE77

accent

#BC4FD9

background

#F7F7FB

surface

#EEEEF7

border

#C9C9D0

text

#0A0912

muted

#7C7B81

Preview Lab

Preview with #374DA1

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

Preview Lab → · Contrast checker → · Palette generator →