#274DB3#274DB3

#274DB3 is a mid, vivid blue. Relative luminance 0.090; OKLCH L 45.7% C 0.168 H 264.9°. Best body text is #FFFFFF at 7.50:1 contrast (WCAG AA passes).

Color values

HEX	#274DB3
RGB	rgb(39, 77, 179)
HSL	hsl(224, 64%, 43%)
HSV	hsv(224, 78%, 70%)
CMYK	cmyk(78.2%, 57%, 0%, 29.8%)
CIE-LAB	lab(35.97, 24.18, -57.99)
CIE-LCH	lch(35.97, 62.83, 292.63°)
OKLab	oklab(45.68% -0.015 -0.1674)
OKLCH	oklch(45.68% 0.168 264.9)
XYZ	xyz(11.6244, 8.9924, 43.7621)
Luminance	0.0899 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#274DB3 #B38D27

analogous

#2793B3 #274DB3 #4727B3

triadic

#274DB3 #B3274D #4DB327

tetradic

#274DB3 #B32793 #B38D27 #27B347

square

#274DB3 #B32793 #B38D27 #27B347

split-complementary

#274DB3 #B34727 #93B327

monochromatic

#11224E #1C3781 #274DB3 #416AD6 #7491E1

Accessibility & contrast

On white

7.50

#274DB3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.80

#274DB3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #274DB3

7.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##274DB3	#FFFFFF	#000000	##FFFFFF
##274DB3	1.00	7.50	2.80	7.50
#FFFFFF	7.50	1.00	21.00	1.00
#000000	2.80	21.00	1.00	21.00
##FFFFFF	7.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005BB6

Deuteranopia (green-blind)

#004EB1

Tritanopia (blue-blind)

#006678

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #274db3;
/* rgb */ color: rgb(39, 77, 179);
/* oklch */ color: oklch(45.7% 0.168 264.9);

Tailwind

colors: {
  custom: {
    50: '#777ecb',
    500: '#274db3',
    950: '#000000',
  },
}

SCSS

$custom: #274db3;
$custom-light: #777ecb;
$custom-dark: #000000;

JSON

{
  "hex": "#274db3",
  "rgb": {
    "r": 39,
    "g": 77,
    "b": 179
  },
  "hsl": {
    "h": 223.714,
    "s": 64.22,
    "l": 42.745
  },
  "oklch": {
    "l": 0.45683,
    "c": 0.16807,
    "h": 264.9
  },
  "luminance": 0.08994
}

Semantic roles & 50–950 ramp

primary

#274DB3

secondary

#C8AF6E

accent

#BA41E7

background

#F7F7FC

surface

#EEEEF9

border

#C9C9D2

text

#0A0913

muted

#7C7B82

Preview Lab

Preview with #274DB3

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

Preview Lab → · Contrast checker → · Palette generator →