#275DB4#275DB4

#275DB4 is a mid, vivid blue. Relative luminance 0.116; OKLCH L 49.1% C 0.150 H 259.6°. Best body text is #FFFFFF at 6.34:1 contrast (WCAG AA passes).

Color values

HEX	#275DB4
RGB	rgb(39, 93, 180)
HSL	hsl(217, 64%, 43%)
HSV	hsv(217, 78%, 71%)
CMYK	cmyk(78.3%, 48.3%, 0%, 29.4%)
CIE-LAB	lab(40.50, 14.00, -51.25)
CIE-LCH	lch(40.50, 53.13, 285.28°)
OKLab	oklab(49.15% -0.0269 -0.1473)
OKLCH	oklch(49.15% 0.15 259.6)
XYZ	xyz(12.9863, 11.5538, 44.7168)
Luminance	0.1155 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#275DB4 #B47E27

analogous

#27A4B4 #275DB4 #3727B4

triadic

#275DB4 #B4275D #5DB427

tetradic

#275DB4 #B427A4 #B47E27 #27B437

square

#275DB4 #B427A4 #B47E27 #27B437

split-complementary

#275DB4 #B43727 #A4B427

monochromatic

#11294F #1C4382 #275DB4 #427BD6 #749EE1

Accessibility & contrast

On white

6.34

#275DB4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.31

#275DB4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #275DB4

6.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##275DB4	#FFFFFF	#000000	##FFFFFF
##275DB4	1.00	6.34	3.31	6.34
#FFFFFF	6.34	1.00	21.00	1.00
#000000	3.31	21.00	1.00	21.00
##FFFFFF	6.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C66B7

Deuteranopia (green-blind)

#0059B2

Tritanopia (blue-blind)

#007280

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #275db4;
/* rgb */ color: rgb(39, 93, 180);
/* oklch */ color: oklch(49.1% 0.150 259.6);

Tailwind

colors: {
  custom: {
    50: '#778acb',
    500: '#275db4',
    950: '#000000',
  },
}

SCSS

$custom: #275db4;
$custom-light: #778acb;
$custom-dark: #000000;

JSON

{
  "hex": "#275db4",
  "rgb": {
    "r": 39,
    "g": 93,
    "b": 180
  },
  "hsl": {
    "h": 217.021,
    "s": 64.384,
    "l": 42.941
  },
  "oklch": {
    "l": 0.4915,
    "c": 0.14971,
    "h": 259.6
  },
  "luminance": 0.11555
}

Semantic roles & 50–950 ramp

primary

#275DB4

secondary

#C8A66F

accent

#A740E7

background

#F7F8FC

surface

#EEF0F8

border

#C9CBD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #275DB4

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

Preview Lab → · Contrast checker → · Palette generator →