#274EB3#274EB3

#274EB3 is a mid, vivid blue. Relative luminance 0.091; OKLCH L 45.9% C 0.167 H 264.6°. Best body text is #FFFFFF at 7.43:1 contrast (WCAG AA passes).

Color values

HEX	#274EB3
RGB	rgb(39, 78, 179)
HSL	hsl(223, 64%, 43%)
HSV	hsv(223, 78%, 70%)
CMYK	cmyk(78.2%, 56.4%, 0%, 29.8%)
CIE-LAB	lab(36.24, 23.52, -57.55)
CIE-LCH	lch(36.24, 62.17, 292.23°)
OKLab	oklab(45.89% -0.0157 -0.1661)
OKLCH	oklch(45.89% 0.167 264.6)
XYZ	xyz(11.6949, 9.1334, 43.7857)
Luminance	0.0914 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#274EB3 #B38C27

analogous

#2794B3 #274EB3 #4627B3

triadic

#274EB3 #B3274E #4EB327

tetradic

#274EB3 #B32794 #B38C27 #27B346

square

#274EB3 #B32794 #B38C27 #27B346

split-complementary

#274EB3 #B34627 #94B327

monochromatic

#11224E #1C3881 #274EB3 #416BD6 #7492E1

Accessibility & contrast

On white

7.43

#274EB3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.83

#274EB3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #274EB3

7.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##274EB3	#FFFFFF	#000000	##FFFFFF
##274EB3	1.00	7.43	2.83	7.43
#FFFFFF	7.43	1.00	21.00	1.00
#000000	2.83	21.00	1.00	21.00
##FFFFFF	7.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005CB6

Deuteranopia (green-blind)

#004FB1

Tritanopia (blue-blind)

#006779

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #274eb3;
/* rgb */ color: rgb(39, 78, 179);
/* oklch */ color: oklch(45.9% 0.167 264.6);

Tailwind

colors: {
  custom: {
    50: '#777fcb',
    500: '#274eb3',
    950: '#000000',
  },
}

SCSS

$custom: #274eb3;
$custom-light: #777fcb;
$custom-dark: #000000;

JSON

{
  "hex": "#274eb3",
  "rgb": {
    "r": 39,
    "g": 78,
    "b": 179
  },
  "hsl": {
    "h": 223.286,
    "s": 64.22,
    "l": 42.745
  },
  "oklch": {
    "l": 0.45887,
    "c": 0.16683,
    "h": 264.6
  },
  "luminance": 0.09135
}

Semantic roles & 50–950 ramp

primary

#274EB3

secondary

#C8AF6E

accent

#B941E7

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#0A0A13

muted

#7C7C82

Preview Lab

Preview with #274EB3

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

Preview Lab → · Contrast checker → · Palette generator →