#1F367B#1F367B

#1F367B is a dark, vivid blue. Relative luminance 0.044; OKLCH L 35.8% C 0.121 H 266.4°. Best body text is #FFFFFF at 11.22:1 contrast (WCAG AA passes).

Color values

HEX	#1F367B
RGB	rgb(31, 54, 123)
HSL	hsl(225, 60%, 30%)
HSV	hsv(225, 75%, 48%)
CMYK	cmyk(74.8%, 56.1%, 0%, 51.8%)
CIE-LAB	lab(24.82, 16.93, -41.94)
CIE-LCH	lch(24.82, 45.23, 291.99°)
OKLab	oklab(35.81% -0.0076 -0.1207)
OKLCH	oklch(35.81% 0.121 266.4)
XYZ	xyz(5.4581, 4.3591, 19.2888)
Luminance	0.0436 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F367B #7B641F

analogous

#1F647B #1F367B #361F7B

triadic

#1F367B #7B1F36 #367B1F

tetradic

#1F367B #7B1F64 #7B641F #1F7B36

square

#1F367B #7B1F64 #7B641F #1F7B36

split-complementary

#1F367B #7B361F #647B1F

monochromatic

#060B19 #13214A #1F367B #2B4BAC #4467D0

Accessibility & contrast

On white

11.22

#1F367B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#1F367B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F367B

11.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F367B	#FFFFFF	#000000	##FFFFFF
##1F367B	1.00	11.22	1.87	11.22
#FFFFFF	11.22	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#013F7D

Deuteranopia (green-blind)

#00377A

Tritanopia (blue-blind)

#004753

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #1f367b;
/* rgb */ color: rgb(31, 54, 123);
/* oklch */ color: oklch(35.8% 0.121 266.4);

Tailwind

colors: {
  custom: {
    50: '#686ca2',
    500: '#1f367b',
    950: '#000000',
  },
}

SCSS

$custom: #1f367b;
$custom-light: #686ca2;
$custom-dark: #000000;

JSON

{
  "hex": "#1f367b",
  "rgb": {
    "r": 31,
    "g": 54,
    "b": 123
  },
  "hsl": {
    "h": 225,
    "s": 59.74,
    "l": 30.196
  },
  "oklch": {
    "l": 0.35812,
    "c": 0.12098,
    "h": 266.4
  },
  "luminance": 0.0436
}

Semantic roles & 50–950 ramp

primary

#1F367B

secondary

#AE9548

accent

#BB45E3

background

#F6F6FA

surface

#EBEBF3

border

#C6C6CD

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #1F367B

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

Preview Lab → · Contrast checker → · Palette generator →