#275BB3#275BB3

#275BB3 is a mid, vivid blue. Relative luminance 0.112; OKLCH L 48.6% C 0.151 H 260.3°. Best body text is #FFFFFF at 6.49:1 contrast (WCAG AA passes).

Color values

HEX	#275BB3
RGB	rgb(39, 91, 179)
HSL	hsl(218, 64%, 43%)
HSV	hsv(218, 78%, 70%)
CMYK	cmyk(78.2%, 49.2%, 0%, 29.8%)
CIE-LAB	lab(39.86, 14.92, -51.69)
CIE-LCH	lch(39.86, 53.80, 286.10°)
OKLab	oklab(48.64% -0.0254 -0.1486)
OKLCH	oklch(48.64% 0.151 260.3)
XYZ	xyz(12.7115, 11.1667, 44.1245)
Luminance	0.1117 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#275BB3 #B37F27

analogous

#27A1B3 #275BB3 #3927B3

triadic

#275BB3 #B3275B #5BB327

tetradic

#275BB3 #B327A1 #B37F27 #27B339

square

#275BB3 #B327A1 #B37F27 #27B339

split-complementary

#275BB3 #B33927 #A1B327

monochromatic

#11284E #1C4181 #275BB3 #4179D6 #749CE1

Accessibility & contrast

On white

6.49

#275BB3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.23

#275BB3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #275BB3

6.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##275BB3	#FFFFFF	#000000	##FFFFFF
##275BB3	1.00	6.49	3.23	6.49
#FFFFFF	6.49	1.00	21.00	1.00
#000000	3.23	21.00	1.00	21.00
##FFFFFF	6.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2865B6

Deuteranopia (green-blind)

#0058B1

Tritanopia (blue-blind)

#00707E

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #275bb3;
/* rgb */ color: rgb(39, 91, 179);
/* oklch */ color: oklch(48.6% 0.151 260.3);

Tailwind

colors: {
  custom: {
    50: '#7688ca',
    500: '#275bb3',
    950: '#000000',
  },
}

SCSS

$custom: #275bb3;
$custom-light: #7688ca;
$custom-dark: #000000;

JSON

{
  "hex": "#275bb3",
  "rgb": {
    "r": 39,
    "g": 91,
    "b": 179
  },
  "hsl": {
    "h": 217.714,
    "s": 64.22,
    "l": 42.745
  },
  "oklch": {
    "l": 0.48639,
    "c": 0.15077,
    "h": 260.3
  },
  "luminance": 0.11168
}

Semantic roles & 50–950 ramp

primary

#275BB3

secondary

#C8A66E

accent

#A941E7

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #275BB3

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

Preview Lab → · Contrast checker → · Palette generator →