#1F357C#1F357C

#1F357C is a dark, vivid blue. Relative luminance 0.043; OKLCH L 35.7% C 0.124 H 266.9°. Best body text is #FFFFFF at 11.30:1 contrast (WCAG AA passes).

Color values

HEX	#1F357C
RGB	rgb(31, 53, 124)
HSL	hsl(226, 60%, 30%)
HSV	hsv(226, 75%, 49%)
CMYK	cmyk(75%, 57.3%, 0%, 51.4%)
CIE-LAB	lab(24.61, 18.04, -42.91)
CIE-LCH	lch(24.61, 46.55, 292.80°)
OKLab	oklab(35.68% -0.0067 -0.1236)
OKLCH	oklch(35.68% 0.124 266.9)
XYZ	xyz(5.4750, 4.2922, 19.6048)
Luminance	0.0429 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F357C #7C661F

analogous

#1F647C #1F357C #371F7C

triadic

#1F357C #7C1F35 #357C1F

tetradic

#1F357C #7C1F64 #7C661F #1F7C37

square

#1F357C #7C1F64 #7C661F #1F7C37

split-complementary

#1F357C #7C371F #647C1F

monochromatic

#070B1A #13204B #1F357C #2B4AAD #4566D0

Accessibility & contrast

On white

11.30

#1F357C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#1F357C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F357C

11.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F357C	#FFFFFF	#000000	##FFFFFF
##1F357C	1.00	11.30	1.86	11.30
#FFFFFF	11.30	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F7E

Deuteranopia (green-blind)

#00367B

Tritanopia (blue-blind)

#004653

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #1f357c;
/* rgb */ color: rgb(31, 53, 124);
/* oklch */ color: oklch(35.7% 0.124 266.9);

Tailwind

colors: {
  custom: {
    50: '#696ba2',
    500: '#1f357c',
    950: '#000000',
  },
}

SCSS

$custom: #1f357c;
$custom-light: #696ba2;
$custom-dark: #000000;

JSON

{
  "hex": "#1f357c",
  "rgb": {
    "r": 31,
    "g": 53,
    "b": 124
  },
  "hsl": {
    "h": 225.806,
    "s": 60,
    "l": 30.392
  },
  "oklch": {
    "l": 0.35679,
    "c": 0.12379,
    "h": 266.9
  },
  "luminance": 0.04293
}

Semantic roles & 50–950 ramp

primary

#1F357C

secondary

#AF9748

accent

#BE45E3

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #1F357C

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

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