#275BB5#275BB5

#275BB5 is a mid, vivid blue. Relative luminance 0.113; OKLCH L 48.8% C 0.153 H 260.6°. Best body text is #FFFFFF at 6.46:1 contrast (WCAG AA passes).

Color values

HEX	#275BB5
RGB	rgb(39, 91, 181)
HSL	hsl(218, 65%, 43%)
HSV	hsv(218, 78%, 71%)
CMYK	cmyk(78.5%, 49.7%, 0%, 29%)
CIE-LAB	lab(40.00, 15.70, -52.65)
CIE-LCH	lch(40.00, 54.94, 286.60°)
OKLab	oklab(48.79% -0.0252 -0.1514)
OKLCH	oklch(48.79% 0.154 260.6)
XYZ	xyz(12.9153, 11.2482, 45.1975)
Luminance	0.1125 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#275BB5 #B58127

analogous

#27A2B5 #275BB5 #3A27B5

triadic

#275BB5 #B5275B #5BB527

tetradic

#275BB5 #B527A2 #B58127 #27B53A

square

#275BB5 #B527A2 #B58127 #27B53A

split-complementary

#275BB5 #B53A27 #A2B527

monochromatic

#112850 #1C4283 #275BB5 #4379D6 #759DE1

Accessibility & contrast

On white

6.46

#275BB5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.25

#275BB5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #275BB5

6.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##275BB5	#FFFFFF	#000000	##FFFFFF
##275BB5	1.00	6.46	3.25	6.46
#FFFFFF	6.46	1.00	21.00	1.00
#000000	3.25	21.00	1.00	21.00
##FFFFFF	6.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2565B8

Deuteranopia (green-blind)

#0058B3

Tritanopia (blue-blind)

#00717F

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #275bb5;
/* rgb */ color: rgb(39, 91, 181);
/* oklch */ color: oklch(48.8% 0.153 260.6);

Tailwind

colors: {
  custom: {
    50: '#7788cc',
    500: '#275bb5',
    950: '#000000',
  },
}

SCSS

$custom: #275bb5;
$custom-light: #7788cc;
$custom-dark: #000000;

JSON

{
  "hex": "#275bb5",
  "rgb": {
    "r": 39,
    "g": 91,
    "b": 181
  },
  "hsl": {
    "h": 218.028,
    "s": 64.545,
    "l": 43.137
  },
  "oklch": {
    "l": 0.48786,
    "c": 0.1535,
    "h": 260.6
  },
  "luminance": 0.1125
}

Semantic roles & 50–950 ramp

primary

#275BB5

secondary

#C9A86F

accent

#AA40E8

background

#F7F8FC

surface

#EEEFF9

border

#C9CAD2

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #275BB5

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

Preview Lab → · Contrast checker → · Palette generator →