#374B8A#374B8A

#374B8A is a dark, moderate blue. Relative luminance 0.077; OKLCH L 43.0% C 0.107 H 268.4°. Best body text is #FFFFFF at 8.28:1 contrast (WCAG AA passes).

Color values

HEX	#374B8A
RGB	rgb(55, 75, 138)
HSL	hsl(226, 43%, 38%)
HSV	hsv(226, 60%, 54%)
CMYK	cmyk(60.1%, 45.7%, 0%, 45.9%)
CIE-LAB	lab(33.30, 12.62, -37.57)
CIE-LCH	lch(33.30, 39.63, 288.57°)
OKLab	oklab(42.96% -0.003 -0.107)
OKLCH	oklch(42.96% 0.107 268.4)
XYZ	xyz(8.6775, 7.6787, 25.0647)
Luminance	0.0768 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#374B8A #8A7637

analogous

#37748A #374B8A #4C378A

triadic

#374B8A #8A374B #4B8A37

tetradic

#374B8A #8A3774 #8A7637 #378A4C

square

#374B8A #8A3774 #8A7637 #378A4C

split-complementary

#374B8A #8A4C37 #748A37

monochromatic

#141B32 #26335E #374B8A #4863B6 #7488C8

Accessibility & contrast

On white

8.28

#374B8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.54

#374B8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #374B8A

8.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##374B8A	#FFFFFF	#000000	##FFFFFF
##374B8A	1.00	8.28	2.54	8.28
#FFFFFF	8.28	1.00	21.00	1.00
#000000	2.54	21.00	1.00	21.00
##FFFFFF	8.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E528C

Deuteranopia (green-blind)

#234B89

Tritanopia (blue-blind)

#005963

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #374b8a;
/* rgb */ color: rgb(55, 75, 138);
/* oklch */ color: oklch(43.0% 0.107 268.4);

Tailwind

colors: {
  custom: {
    50: '#757cac',
    500: '#374b8a',
    950: '#000000',
  },
}

SCSS

$custom: #374b8a;
$custom-light: #757cac;
$custom-dark: #000000;

JSON

{
  "hex": "#374b8a",
  "rgb": {
    "r": 55,
    "g": 75,
    "b": 138
  },
  "hsl": {
    "h": 225.542,
    "s": 43.005,
    "l": 37.843
  },
  "oklch": {
    "l": 0.42955,
    "c": 0.10708,
    "h": 268.4
  },
  "luminance": 0.07679
}

Semantic roles & 50–950 ramp

primary

#374B8A

secondary

#B0A06D

accent

#B455D3

background

#F7F7FA

surface

#EDEEF4

border

#C8C9CE

text

#090910

muted

#7B7B7F

Preview Lab

Preview with #374B8A

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

Preview Lab → · Contrast checker → · Palette generator →