#1F349B#1F349B

#1F349B is a dark, vivid blue. Relative luminance 0.051; OKLCH L 38.3% C 0.168 H 268.0°. Best body text is #FFFFFF at 10.38:1 contrast (WCAG AA passes).

Color values

HEX	#1F349B
RGB	rgb(31, 52, 155)
HSL	hsl(230, 67%, 36%)
HSV	hsv(230, 80%, 61%)
CMYK	cmyk(80%, 66.5%, 0%, 39.2%)
CIE-LAB	lab(27.05, 30.84, -58.16)
CIE-LCH	lch(27.05, 65.83, 297.93°)
OKLab	oklab(38.33% -0.0059 -0.1684)
OKLCH	oklch(38.33% 0.168 268)
XYZ	xyz(7.7074, 5.1130, 31.5847)
Luminance	0.0511 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F349B #9B861F

analogous

#1F729B #1F349B #481F9B

triadic

#1F349B #9B1F34 #349B1F

tetradic

#1F349B #9B1F72 #9B861F #1F9B48

square

#1F349B #9B1F72 #9B861F #1F9B48

split-complementary

#1F349B #9B481F #729B1F

monochromatic

#0B1235 #152368 #1F349B #2945CE #576EDD

Accessibility & contrast

On white

10.38

#1F349B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.02

#1F349B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F349B

10.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F349B	#FFFFFF	#000000	##FFFFFF
##1F349B	1.00	10.38	2.02	10.38
#FFFFFF	10.38	1.00	21.00	1.00
#000000	2.02	21.00	1.00	21.00
##FFFFFF	10.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00469E

Deuteranopia (green-blind)

#003A99

Tritanopia (blue-blind)

#005062

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #1f349b;
/* rgb */ color: rgb(31, 52, 155);
/* oklch */ color: oklch(38.3% 0.168 268.0);

Tailwind

colors: {
  custom: {
    50: '#716bb9',
    500: '#1f349b',
    950: '#000000',
  },
}

SCSS

$custom: #1f349b;
$custom-light: #716bb9;
$custom-dark: #000000;

JSON

{
  "hex": "#1f349b",
  "rgb": {
    "r": 31,
    "g": 52,
    "b": 155
  },
  "hsl": {
    "h": 229.839,
    "s": 66.667,
    "l": 36.471
  },
  "oklch": {
    "l": 0.38331,
    "c": 0.16846,
    "h": 268
  },
  "luminance": 0.05114
}

Semantic roles & 50–950 ramp

primary

#1F349B

secondary

#C1AF55

accent

#CD3EEA

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#090612

muted

#7B7A81

Preview Lab

Preview with #1F349B

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

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