#374E87#374E87

#374E87 is a dark, moderate blue. Relative luminance 0.080; OKLCH L 43.4% C 0.099 H 265.9°. Best body text is #FFFFFF at 8.07:1 contrast (WCAG AA passes).

Color values

HEX	#374E87
RGB	rgb(55, 78, 135)
HSL	hsl(223, 42%, 37%)
HSV	hsv(223, 59%, 53%)
CMYK	cmyk(59.3%, 42.2%, 0%, 47.1%)
CIE-LAB	lab(34.00, 9.56, -34.61)
CIE-LCH	lch(34.00, 35.91, 285.44°)
OKLab	oklab(43.43% -0.0071 -0.0983)
OKLCH	oklch(43.43% 0.099 265.9)
XYZ	xyz(8.6716, 8.0096, 24.0060)
Luminance	0.0801 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#374E87 #877037

analogous

#377687 #374E87 #483787

triadic

#374E87 #87374E #4E8737

tetradic

#374E87 #873776 #877037 #378748

square

#374E87 #873776 #877037 #378748

split-complementary

#374E87 #874837 #768737

monochromatic

#141C30 #25355C #374E87 #4967B2 #738BC6

Accessibility & contrast

On white

8.07

#374E87 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.60

#374E87 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #374E87

8.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##374E87	#FFFFFF	#000000	##FFFFFF
##374E87	1.00	8.07	2.60	8.07
#FFFFFF	8.07	1.00	21.00	1.00
#000000	2.60	21.00	1.00	21.00
##FFFFFF	8.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#365489

Deuteranopia (green-blind)

#2B4D86

Tritanopia (blue-blind)

#005B64

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #374e87;
/* rgb */ color: rgb(55, 78, 135);
/* oklch */ color: oklch(43.4% 0.099 265.9);

Tailwind

colors: {
  custom: {
    50: '#757faa',
    500: '#374e87',
    950: '#000000',
  },
}

SCSS

$custom: #374e87;
$custom-light: #757faa;
$custom-dark: #000000;

JSON

{
  "hex": "#374e87",
  "rgb": {
    "r": 55,
    "g": 78,
    "b": 135
  },
  "hsl": {
    "h": 222.75,
    "s": 42.105,
    "l": 37.255
  },
  "oklch": {
    "l": 0.43433,
    "c": 0.09858,
    "h": 265.9
  },
  "luminance": 0.0801
}

Semantic roles & 50–950 ramp

primary

#374E87

secondary

#AF9B6B

accent

#AE56D2

background

#F7F7FA

surface

#EDEEF4

border

#C8C9CE

text

#090A10

muted

#7B7C7F

Preview Lab

Preview with #374E87

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

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