#2F55B1#2F55B1

#2F55B1 is a mid, vivid blue. Relative luminance 0.103; OKLCH L 47.5% C 0.153 H 264.4°. Best body text is #FFFFFF at 6.87:1 contrast (WCAG AA passes).

Color values

HEX	#2F55B1
RGB	rgb(47, 85, 177)
HSL	hsl(222, 58%, 44%)
HSV	hsv(222, 73%, 69%)
CMYK	cmyk(73.4%, 52%, 0%, 30.6%)
CIE-LAB	lab(38.33, 19.09, -52.97)
CIE-LCH	lch(38.33, 56.30, 289.82°)
OKLab	oklab(47.51% -0.0149 -0.1524)
OKLCH	oklch(47.51% 0.153 264.4)
XYZ	xyz(12.3538, 10.2743, 42.9185)
Luminance	0.1028 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F55B1 #B18B2F

analogous

#2F96B1 #2F55B1 #4A2FB1

triadic

#2F55B1 #B12F55 #55B12F

tetradic

#2F55B1 #B12F96 #B18B2F #2FB14A

square

#2F55B1 #B12F96 #B18B2F #2FB14A

split-complementary

#2F55B1 #B14A2F #96B12F

monochromatic

#152750 #223E81 #2F55B1 #4D74D0 #7E99DD

Accessibility & contrast

On white

6.87

#2F55B1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.06

#2F55B1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2F55B1

6.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F55B1	#FFFFFF	#000000	##FFFFFF
##2F55B1	1.00	6.87	3.06	6.87
#FFFFFF	6.87	1.00	21.00	1.00
#000000	3.06	21.00	1.00	21.00
##FFFFFF	6.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1961B4

Deuteranopia (green-blind)

#0055AF

Tritanopia (blue-blind)

#006B7B

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #2f55b1;
/* rgb */ color: rgb(47, 85, 177);
/* oklch */ color: oklch(47.5% 0.153 264.4);

Tailwind

colors: {
  custom: {
    50: '#7984c9',
    500: '#2f55b1',
    950: '#000000',
  },
}

SCSS

$custom: #2f55b1;
$custom-light: #7984c9;
$custom-dark: #000000;

JSON

{
  "hex": "#2f55b1",
  "rgb": {
    "r": 47,
    "g": 85,
    "b": 177
  },
  "hsl": {
    "h": 222.462,
    "s": 58.036,
    "l": 43.922
  },
  "oklch": {
    "l": 0.4751,
    "c": 0.15308,
    "h": 264.4
  },
  "luminance": 0.10276
}

Semantic roles & 50–950 ramp

primary

#2F55B1

secondary

#C5AE76

accent

#B447E1

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#0A0A13

muted

#7C7C82

Preview Lab

Preview with #2F55B1

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

Preview Lab → · Contrast checker → · Palette generator →