#374E80#374E80

#374E80 is a dark, moderate blue. Relative luminance 0.078; OKLCH L 43.0% C 0.088 H 264.3°. Best body text is #FFFFFF at 8.19:1 contrast (WCAG AA passes).

Color values

HEX	#374E80
RGB	rgb(55, 78, 128)
HSL	hsl(221, 40%, 36%)
HSV	hsv(221, 57%, 50%)
CMYK	cmyk(57%, 39.1%, 0%, 49.8%)
CIE-LAB	lab(33.60, 7.08, -30.93)
CIE-LCH	lch(33.60, 31.73, 282.90°)
OKLab	oklab(42.99% -0.0087 -0.0876)
OKLCH	oklch(42.99% 0.088 264.3)
XYZ	xyz(8.1949, 7.8189, 21.4952)
Luminance	0.0782 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#374E80 #806937

analogous

#377280 #374E80 #443780

triadic

#374E80 #80374E #4E8037

tetradic

#374E80 #803772 #806937 #378044

square

#374E80 #803772 #806937 #378044

split-complementary

#374E80 #804437 #728037

monochromatic

#121A2A #253455 #374E80 #4968AB #708AC2

Accessibility & contrast

On white

8.19

#374E80 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.56

#374E80 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #374E80

8.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##374E80	#FFFFFF	#000000	##FFFFFF
##374E80	1.00	8.19	2.56	8.19
#FFFFFF	8.19	1.00	21.00	1.00
#000000	2.56	21.00	1.00	21.00
##FFFFFF	8.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A5382

Deuteranopia (green-blind)

#314C7F

Tritanopia (blue-blind)

#0C5961

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #374e80;
/* rgb */ color: rgb(55, 78, 128);
/* oklch */ color: oklch(43.0% 0.088 264.3);

Tailwind

colors: {
  custom: {
    50: '#747fa5',
    500: '#374e80',
    950: '#000000',
  },
}

SCSS

$custom: #374e80;
$custom-light: #747fa5;
$custom-dark: #000000;

JSON

{
  "hex": "#374e80",
  "rgb": {
    "r": 55,
    "g": 78,
    "b": 128
  },
  "hsl": {
    "h": 221.096,
    "s": 39.891,
    "l": 35.882
  },
  "oklch": {
    "l": 0.42994,
    "c": 0.088,
    "h": 264.3
  },
  "luminance": 0.0782
}

Semantic roles & 50–950 ramp

primary

#374E80

secondary

#AA9669

accent

#AA58D0

background

#F7F7FA

surface

#EDEEF4

border

#C8C9CE

text

#080A0F

muted

#7B7C7F

Preview Lab

Preview with #374E80

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

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