#274DB4#274DB4

#274DB4 is a mid, vivid blue. Relative luminance 0.090; OKLCH L 45.8% C 0.169 H 265.0°. Best body text is #FFFFFF at 7.48:1 contrast (WCAG AA passes).

Color values

HEX	#274DB4
RGB	rgb(39, 77, 180)
HSL	hsl(224, 64%, 43%)
HSV	hsv(224, 78%, 71%)
CMYK	cmyk(78.3%, 57.2%, 0%, 29.4%)
CIE-LAB	lab(36.05, 24.56, -58.46)
CIE-LCH	lch(36.05, 63.41, 292.79°)
OKLab	oklab(45.77% -0.0149 -0.1688)
OKLCH	oklch(45.77% 0.169 265)
XYZ	xyz(11.7259, 9.0330, 44.2967)
Luminance	0.0903 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#274DB4 #B48E27

analogous

#2793B4 #274DB4 #4727B4

triadic

#274DB4 #B4274D #4DB427

tetradic

#274DB4 #B42793 #B48E27 #27B447

square

#274DB4 #B42793 #B48E27 #27B447

split-complementary

#274DB4 #B44727 #93B427

monochromatic

#11224F #1C3782 #274DB4 #426AD6 #7492E1

Accessibility & contrast

On white

7.48

#274DB4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.81

#274DB4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #274DB4

7.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##274DB4	#FFFFFF	#000000	##FFFFFF
##274DB4	1.00	7.48	2.81	7.48
#FFFFFF	7.48	1.00	21.00	1.00
#000000	2.81	21.00	1.00	21.00
##FFFFFF	7.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005CB8

Deuteranopia (green-blind)

#004FB2

Tritanopia (blue-blind)

#006779

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #274db4;
/* rgb */ color: rgb(39, 77, 180);
/* oklch */ color: oklch(45.8% 0.169 265.0);

Tailwind

colors: {
  custom: {
    50: '#777ecb',
    500: '#274db4',
    950: '#000000',
  },
}

SCSS

$custom: #274db4;
$custom-light: #777ecb;
$custom-dark: #000000;

JSON

{
  "hex": "#274db4",
  "rgb": {
    "r": 39,
    "g": 77,
    "b": 180
  },
  "hsl": {
    "h": 223.83,
    "s": 64.384,
    "l": 42.941
  },
  "oklch": {
    "l": 0.45767,
    "c": 0.16942,
    "h": 265
  },
  "luminance": 0.09034
}

Semantic roles & 50–950 ramp

primary

#274DB4

secondary

#C8B06F

accent

#BA40E7

background

#F7F7FC

surface

#EEEEF9

border

#C9C9D2

text

#0A0913

muted

#7C7B82

Preview Lab

Preview with #274DB4

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

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