#2B317F#2B317F

#2B317F is a dark, vivid blue. Relative luminance 0.042; OKLCH L 35.8% C 0.130 H 274.4°. Best body text is #FFFFFF at 11.36:1 contrast (WCAG AA passes).

Color values

HEX	#2B317F
RGB	rgb(43, 49, 127)
HSL	hsl(236, 49%, 33%)
HSV	hsv(236, 66%, 50%)
CMYK	cmyk(66.1%, 61.4%, 0%, 50.2%)
CIE-LAB	lab(24.46, 23.86, -45.03)
CIE-LCH	lch(24.46, 50.96, 297.92°)
OKLab	oklab(35.83% 0.01 -0.1296)
OKLCH	oklch(35.83% 0.13 274.4)
XYZ	xyz(5.9241, 4.2420, 20.5812)
Luminance	0.0424 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B317F #7F792B

analogous

#2B5B7F #2B317F #4F2B7F

triadic

#2B317F #7F2B31 #317F2B

tetradic

#2B317F #7F2B5B #7F792B #2B7F4F

square

#2B317F #7F2B5B #7F792B #2B7F4F

split-complementary

#2B317F #7F4F2B #5B7F2B

monochromatic

#0C0E24 #1C1F51 #2B317F #3A43AD #5C64C8

Accessibility & contrast

On white

11.36

#2B317F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#2B317F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B317F

11.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B317F	#FFFFFF	#000000	##FFFFFF
##2B317F	1.00	11.36	1.85	11.36
#FFFFFF	11.36	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E82

Deuteranopia (green-blind)

#00367D

Tritanopia (blue-blind)

#004453

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #2b317f;
/* rgb */ color: rgb(43, 49, 127);
/* oklch */ color: oklch(35.8% 0.130 274.4);

Tailwind

colors: {
  custom: {
    50: '#6f69a5',
    500: '#2b317f',
    950: '#000000',
  },
}

SCSS

$custom: #2b317f;
$custom-light: #6f69a5;
$custom-dark: #000000;

JSON

{
  "hex": "#2b317f",
  "rgb": {
    "r": 43,
    "g": 49,
    "b": 127
  },
  "hsl": {
    "h": 235.714,
    "s": 49.412,
    "l": 33.333
  },
  "oklch": {
    "l": 0.35826,
    "c": 0.12999,
    "h": 274.4
  },
  "luminance": 0.04243
}

Semantic roles & 50–950 ramp

primary

#2B317F

secondary

#AEA858

accent

#CF4FD9

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#08060F

muted

#7B7A7F

Preview Lab

Preview with #2B317F

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

Preview Lab → · Contrast checker → · Palette generator →