#1F30A7#1F30A7

#1F30A7 is a dark, vivid blue. Relative luminance 0.052; OKLCH L 38.9% C 0.189 H 268.5°. Best body text is #FFFFFF at 10.30:1 contrast (WCAG AA passes).

Color values

HEX	#1F30A7
RGB	rgb(31, 48, 167)
HSL	hsl(233, 69%, 39%)
HSV	hsv(233, 81%, 65%)
CMYK	cmyk(81.4%, 71.3%, 0%, 34.5%)
CIE-LAB	lab(27.28, 37.87, -65.07)
CIE-LCH	lch(27.28, 75.29, 300.20°)
OKLab	oklab(38.85% -0.0049 -0.1885)
OKLCH	oklch(38.85% 0.189 268.5)
XYZ	xyz(8.5947, 5.1942, 37.1013)
Luminance	0.0520 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F30A7 #A7961F

analogous

#1F74A7 #1F30A7 #521FA7

triadic

#1F30A7 #A71F30 #30A71F

tetradic

#1F30A7 #A71F74 #A7961F #1FA752

square

#1F30A7 #A71F74 #A7961F #1FA752

split-complementary

#1F30A7 #A7521F #74A71F

monochromatic

#0C1240 #152173 #1F30A7 #2B41D8 #5F6FE1

Accessibility & contrast

On white

10.30

#1F30A7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.04

#1F30A7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F30A7

10.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F30A7	#FFFFFF	#000000	##FFFFFF
##1F30A7	1.00	10.30	2.04	10.30
#FFFFFF	10.30	1.00	21.00	1.00
#000000	2.04	21.00	1.00	21.00
##FFFFFF	10.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0047AB

Deuteranopia (green-blind)

#003AA5

Tritanopia (blue-blind)

#005268

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #1f30a7;
/* rgb */ color: rgb(31, 48, 167);
/* oklch */ color: oklch(38.9% 0.189 268.5);

Tailwind

colors: {
  custom: {
    50: '#7469c2',
    500: '#1f30a7',
    950: '#000000',
  },
}

SCSS

$custom: #1f30a7;
$custom-light: #7469c2;
$custom-dark: #000000;

JSON

{
  "hex": "#1f30a7",
  "rgb": {
    "r": 31,
    "g": 48,
    "b": 167
  },
  "hsl": {
    "h": 232.5,
    "s": 68.687,
    "l": 38.824
  },
  "oklch": {
    "l": 0.38853,
    "c": 0.18859,
    "h": 268.5
  },
  "luminance": 0.05195
}

Semantic roles & 50–950 ramp

primary

#1F30A7

secondary

#C6B95C

accent

#D63CEC

background

#F7F6FC

surface

#EEEBF8

border

#C9C6D1

text

#0A0613

muted

#7C7A82

Preview Lab

Preview with #1F30A7

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

Preview Lab → · Contrast checker → · Palette generator →