#275DB3#275DB3

#275DB3 is a mid, vivid blue. Relative luminance 0.115; OKLCH L 49.1% C 0.148 H 259.5°. Best body text is #FFFFFF at 6.36:1 contrast (WCAG AA passes).

Color values

HEX	#275DB3
RGB	rgb(39, 93, 179)
HSL	hsl(217, 64%, 43%)
HSV	hsv(217, 78%, 70%)
CMYK	cmyk(78.2%, 48%, 0%, 29.8%)
CIE-LAB	lab(40.43, 13.61, -50.77)
CIE-LCH	lch(40.43, 52.56, 285.01°)
OKLab	oklab(49.08% -0.0271 -0.1459)
OKLCH	oklch(49.08% 0.148 259.5)
XYZ	xyz(12.8848, 11.5132, 44.1823)
Luminance	0.1152 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#275DB3 #B37D27

analogous

#27A3B3 #275DB3 #3727B3

triadic

#275DB3 #B3275D #5DB327

tetradic

#275DB3 #B327A3 #B37D27 #27B337

square

#275DB3 #B327A3 #B37D27 #27B337

split-complementary

#275DB3 #B33727 #A3B327

monochromatic

#11294E #1C4381 #275DB3 #417BD6 #749EE1

Accessibility & contrast

On white

6.36

#275DB3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.30

#275DB3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #275DB3

6.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##275DB3	#FFFFFF	#000000	##FFFFFF
##275DB3	1.00	6.36	3.30	6.36
#FFFFFF	6.36	1.00	21.00	1.00
#000000	3.30	21.00	1.00	21.00
##FFFFFF	6.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D66B6

Deuteranopia (green-blind)

#0059B1

Tritanopia (blue-blind)

#00727F

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #275db3;
/* rgb */ color: rgb(39, 93, 179);
/* oklch */ color: oklch(49.1% 0.148 259.5);

Tailwind

colors: {
  custom: {
    50: '#768aca',
    500: '#275db3',
    950: '#000000',
  },
}

SCSS

$custom: #275db3;
$custom-light: #768aca;
$custom-dark: #000000;

JSON

{
  "hex": "#275db3",
  "rgb": {
    "r": 39,
    "g": 93,
    "b": 179
  },
  "hsl": {
    "h": 216.857,
    "s": 64.22,
    "l": 42.745
  },
  "oklch": {
    "l": 0.49078,
    "c": 0.14835,
    "h": 259.5
  },
  "luminance": 0.11515
}

Semantic roles & 50–950 ramp

primary

#275DB3

secondary

#C8A56E

accent

#A741E7

background

#F7F8FC

surface

#EEF0F8

border

#C9CBD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #275DB3

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

Preview Lab → · Contrast checker → · Palette generator →