#274DB1#274DB1

#274DB1 is a mid, vivid blue. Relative luminance 0.089; OKLCH L 45.5% C 0.165 H 264.8°. Best body text is #FFFFFF at 7.55:1 contrast (WCAG AA passes).

Color values

HEX	#274DB1
RGB	rgb(39, 77, 177)
HSL	hsl(223, 64%, 42%)
HSV	hsv(223, 78%, 69%)
CMYK	cmyk(78%, 56.5%, 0%, 30.6%)
CIE-LAB	lab(35.81, 23.41, -57.06)
CIE-LCH	lch(35.81, 61.68, 292.31°)
OKLab	oklab(45.52% -0.0151 -0.1647)
OKLCH	oklch(45.52% 0.165 264.8)
XYZ	xyz(11.4236, 8.9121, 42.7046)
Luminance	0.0891 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#274DB1 #B18B27

analogous

#2792B1 #274DB1 #4627B1

triadic

#274DB1 #B1274D #4DB127

tetradic

#274DB1 #B12792 #B18B27 #27B146

square

#274DB1 #B12792 #B18B27 #27B146

split-complementary

#274DB1 #B14627 #92B127

monochromatic

#11214D #1C377F #274DB1 #4069D5 #7291E0

Accessibility & contrast

On white

7.55

#274DB1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.78

#274DB1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #274DB1

7.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##274DB1	#FFFFFF	#000000	##FFFFFF
##274DB1	1.00	7.55	2.78	7.55
#FFFFFF	7.55	1.00	21.00	1.00
#000000	2.78	21.00	1.00	21.00
##FFFFFF	7.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005BB4

Deuteranopia (green-blind)

#004EAF

Tritanopia (blue-blind)

#006677

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #274db1;
/* rgb */ color: rgb(39, 77, 177);
/* oklch */ color: oklch(45.5% 0.165 264.8);

Tailwind

colors: {
  custom: {
    50: '#777ec9',
    500: '#274db1',
    950: '#000000',
  },
}

SCSS

$custom: #274db1;
$custom-light: #777ec9;
$custom-dark: #000000;

JSON

{
  "hex": "#274db1",
  "rgb": {
    "r": 39,
    "g": 77,
    "b": 177
  },
  "hsl": {
    "h": 223.478,
    "s": 63.889,
    "l": 42.353
  },
  "oklch": {
    "l": 0.45518,
    "c": 0.16535,
    "h": 264.8
  },
  "luminance": 0.08913
}

Semantic roles & 50–950 ramp

primary

#274DB1

secondary

#C7AE6D

accent

#B941E7

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#0A0913

muted

#7C7B82

Preview Lab

Preview with #274DB1

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

Preview Lab → · Contrast checker → · Palette generator →