#1F30A9#1F30A9

#1F30A9 is a dark, vivid blue. Relative luminance 0.053; OKLCH L 39.1% C 0.191 H 268.5°. Best body text is #FFFFFF at 10.22:1 contrast (WCAG AA passes).

Color values

HEX	#1F30A9
RGB	rgb(31, 48, 169)
HSL	hsl(233, 69%, 39%)
HSV	hsv(233, 82%, 66%)
CMYK	cmyk(81.7%, 71.6%, 0%, 33.7%)
CIE-LAB	lab(27.49, 38.59, -65.94)
CIE-LCH	lch(27.49, 76.40, 300.34°)
OKLab	oklab(39.06% -0.0051 -0.191)
OKLCH	oklch(39.06% 0.191 268.5)
XYZ	xyz(8.7810, 5.2688, 38.0826)
Luminance	0.0527 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F30A9 #A9981F

analogous

#1F75A9 #1F30A9 #531FA9

triadic

#1F30A9 #A91F30 #30A91F

tetradic

#1F30A9 #A91F75 #A9981F #1FA953

square

#1F30A9 #A91F75 #A9981F #1FA953

split-complementary

#1F30A9 #A9531F #75A91F

monochromatic

#0C1342 #162175 #1F30A9 #2D42D8 #6070E2

Accessibility & contrast

On white

10.22

#1F30A9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#1F30A9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F30A9

10.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F30A9	#FFFFFF	#000000	##FFFFFF
##1F30A9	1.00	10.22	2.05	10.22
#FFFFFF	10.22	1.00	21.00	1.00
#000000	2.05	21.00	1.00	21.00
##FFFFFF	10.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0048AD

Deuteranopia (green-blind)

#003AA7

Tritanopia (blue-blind)

#005269

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #1f30a9;
/* rgb */ color: rgb(31, 48, 169);
/* oklch */ color: oklch(39.1% 0.191 268.5);

Tailwind

colors: {
  custom: {
    50: '#7569c4',
    500: '#1f30a9',
    950: '#000000',
  },
}

SCSS

$custom: #1f30a9;
$custom-light: #7569c4;
$custom-dark: #000000;

JSON

{
  "hex": "#1f30a9",
  "rgb": {
    "r": 31,
    "g": 48,
    "b": 169
  },
  "hsl": {
    "h": 232.609,
    "s": 69,
    "l": 39.216
  },
  "oklch": {
    "l": 0.39063,
    "c": 0.19112,
    "h": 268.5
  },
  "luminance": 0.0527
}

Semantic roles & 50–950 ramp

primary

#1F30A9

secondary

#C7BA5D

accent

#D63CEC

background

#F7F6FC

surface

#EEEBF8

border

#C9C6D1

text

#0A0613

muted

#7C7A82

Preview Lab

Preview with #1F30A9

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

Preview Lab → · Contrast checker → · Palette generator →