#374F79#374F79

#374F79 is a dark, moderate blue. Relative luminance 0.078; OKLCH L 42.8% C 0.076 H 261.1°. Best body text is #FFFFFF at 8.21:1 contrast (WCAG AA passes).

Color values

HEX	#374F79
RGB	rgb(55, 79, 121)
HSL	hsl(218, 38%, 35%)
HSV	hsv(218, 55%, 47%)
CMYK	cmyk(54.5%, 34.7%, 0%, 52.5%)
CIE-LAB	lab(33.53, 3.99, -26.71)
CIE-LCH	lch(33.53, 27.01, 278.50°)
OKLab	oklab(42.81% -0.0118 -0.0753)
OKLCH	oklch(42.81% 0.076 261.1)
XYZ	xyz(7.8216, 7.7841, 19.1758)
Luminance	0.0779 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#374F79 #796137

analogous

#377079 #374F79 #403779

triadic

#374F79 #79374F #4F7937

tetradic

#374F79 #793770 #796137 #377940

square

#374F79 #793770 #796137 #377940

split-complementary

#374F79 #794037 #707937

monochromatic

#111825 #24344F #374F79 #4A6AA3 #6E8ABD

Accessibility & contrast

On white

8.21

#374F79 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.56

#374F79 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #374F79

8.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##374F79	#FFFFFF	#000000	##FFFFFF
##374F79	1.00	8.21	2.56	8.21
#FFFFFF	8.21	1.00	21.00	1.00
#000000	2.56	21.00	1.00	21.00
##FFFFFF	8.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F527B

Deuteranopia (green-blind)

#374C78

Tritanopia (blue-blind)

#16585E

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #374f79;
/* rgb */ color: rgb(55, 79, 121);
/* oklch */ color: oklch(42.8% 0.076 261.1);

Tailwind

colors: {
  custom: {
    50: '#7380a0',
    500: '#374f79',
    950: '#000000',
  },
}

SCSS

$custom: #374f79;
$custom-light: #7380a0;
$custom-dark: #000000;

JSON

{
  "hex": "#374f79",
  "rgb": {
    "r": 55,
    "g": 79,
    "b": 121
  },
  "hsl": {
    "h": 218.182,
    "s": 37.5,
    "l": 34.51
  },
  "oklch": {
    "l": 0.42813,
    "c": 0.07618,
    "h": 261.1
  },
  "luminance": 0.07785
}

Semantic roles & 50–950 ramp

primary

#374F79

secondary

#A68F66

accent

#A45ACD

background

#F7F7F9

surface

#EDEEF2

border

#C8C9CC

text

#080A0E

muted

#7B7C7E

Preview Lab

Preview with #374F79

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

Preview Lab → · Contrast checker → · Palette generator →