#374E7E#374E7E

#374E7E is a dark, moderate blue. Relative luminance 0.078; OKLCH L 42.9% C 0.085 H 263.8°. Best body text is #FFFFFF at 8.22:1 contrast (WCAG AA passes).

Color values

HEX	#374E7E
RGB	rgb(55, 78, 126)
HSL	hsl(221, 39%, 35%)
HSV	hsv(221, 56%, 49%)
CMYK	cmyk(56.3%, 38.1%, 0%, 50.6%)
CIE-LAB	lab(33.49, 6.38, -29.87)
CIE-LCH	lch(33.49, 30.54, 282.06°)
OKLab	oklab(42.87% -0.0092 -0.0845)
OKLCH	oklch(42.87% 0.085 263.8)
XYZ	xyz(8.0646, 7.7668, 20.8088)
Luminance	0.0777 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#374E7E #7E6737

analogous

#37727E #374E7E #43377E

triadic

#374E7E #7E374E #4E7E37

tetradic

#374E7E #7E3772 #7E6737 #377E43

square

#374E7E #7E3772 #7E6737 #377E43

split-complementary

#374E7E #7E4337 #727E37

monochromatic

#121929 #243453 #374E7E #4A68A9 #6F89C0

Accessibility & contrast

On white

8.22

#374E7E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.55

#374E7E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #374E7E

8.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##374E7E	#FFFFFF	#000000	##FFFFFF
##374E7E	1.00	8.22	2.55	8.22
#FFFFFF	8.22	1.00	21.00	1.00
#000000	2.55	21.00	1.00	21.00
##FFFFFF	8.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B5280

Deuteranopia (green-blind)

#324C7D

Tritanopia (blue-blind)

#0F5860

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #374e7e;
/* rgb */ color: rgb(55, 78, 126);
/* oklch */ color: oklch(42.9% 0.085 263.8);

Tailwind

colors: {
  custom: {
    50: '#737fa3',
    500: '#374e7e',
    950: '#000000',
  },
}

SCSS

$custom: #374e7e;
$custom-light: #737fa3;
$custom-dark: #000000;

JSON

{
  "hex": "#374e7e",
  "rgb": {
    "r": 55,
    "g": 78,
    "b": 126
  },
  "hsl": {
    "h": 220.563,
    "s": 39.227,
    "l": 35.49
  },
  "oklch": {
    "l": 0.42872,
    "c": 0.08497,
    "h": 263.8
  },
  "luminance": 0.07767
}

Semantic roles & 50–950 ramp

primary

#374E7E

secondary

#A99468

accent

#A959CF

background

#F7F7FA

surface

#EDEEF4

border

#C8C9CE

text

#080A0F

muted

#7B7C7F

Preview Lab

Preview with #374E7E

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

Preview Lab → · Contrast checker → · Palette generator →