#374EA5#374EA5

#374EA5 is a mid, vivid blue. Relative luminance 0.090; OKLCH L 45.5% C 0.143 H 268.9°. Best body text is #FFFFFF at 7.51:1 contrast (WCAG AA passes).

Color values

HEX	#374EA5
RGB	rgb(55, 78, 165)
HSL	hsl(227, 50%, 43%)
HSV	hsv(227, 67%, 65%)
CMYK	cmyk(66.7%, 52.7%, 0%, 35.3%)
CIE-LAB	lab(35.94, 20.44, -49.69)
CIE-LCH	lch(35.94, 53.73, 292.36°)
OKLab	oklab(45.53% -0.0026 -0.1426)
OKLCH	oklch(45.53% 0.143 268.9)
XYZ	xyz(11.0892, 8.9766, 36.7383)
Luminance	0.0898 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#374EA5 #A58E37

analogous

#3785A5 #374EA5 #5737A5

triadic

#374EA5 #A5374E #4EA537

tetradic

#374EA5 #A53785 #A58E37 #37A557

square

#374EA5 #A53785 #A58E37 #37A557

split-complementary

#374EA5 #A55737 #85A537

monochromatic

#182349 #283877 #374EA5 #536BC6 #8193D5

Accessibility & contrast

On white

7.51

#374EA5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.80

#374EA5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #374EA5

7.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##374EA5	#FFFFFF	#000000	##FFFFFF
##374EA5	1.00	7.51	2.80	7.51
#FFFFFF	7.51	1.00	21.00	1.00
#000000	2.80	21.00	1.00	21.00
##FFFFFF	7.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#185AA8

Deuteranopia (green-blind)

#0050A3

Tritanopia (blue-blind)

#006372

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #374ea5;
/* rgb */ color: rgb(55, 78, 165);
/* oklch */ color: oklch(45.5% 0.143 268.9);

Tailwind

colors: {
  custom: {
    50: '#7a7fc0',
    500: '#374ea5',
    950: '#000000',
  },
}

SCSS

$custom: #374ea5;
$custom-light: #7a7fc0;
$custom-dark: #000000;

JSON

{
  "hex": "#374ea5",
  "rgb": {
    "r": 55,
    "g": 78,
    "b": 165
  },
  "hsl": {
    "h": 227.455,
    "s": 50,
    "l": 43.137
  },
  "oklch": {
    "l": 0.45534,
    "c": 0.14265,
    "h": 268.9
  },
  "luminance": 0.08978
}

Semantic roles & 50–950 ramp

primary

#374EA5

secondary

#BFB079

accent

#BC4EDA

background

#F7F7FB

surface

#EEEEF7

border

#C9C9D0

text

#0A0A12

muted

#7C7C81

Preview Lab

Preview with #374EA5

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

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