#1F2FA5#1F2FA5

#1F2FA5 is a dark, vivid blue. Relative luminance 0.050; OKLCH L 38.5% C 0.187 H 268.7°. Best body text is #FFFFFF at 10.46:1 contrast (WCAG AA passes).

Color values

HEX	#1F2FA5
RGB	rgb(31, 47, 165)
HSL	hsl(233, 68%, 38%)
HSV	hsv(233, 81%, 65%)
CMYK	cmyk(81.2%, 71.5%, 0%, 35.3%)
CIE-LAB	lab(26.85, 37.77, -64.58)
CIE-LCH	lch(26.85, 74.81, 300.32°)
OKLab	oklab(38.48% -0.0043 -0.1871)
OKLCH	oklch(38.48% 0.187 268.7)
XYZ	xyz(8.3708, 5.0400, 36.1217)
Luminance	0.0504 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2FA5 #A5951F

analogous

#1F72A5 #1F2FA5 #521FA5

triadic

#1F2FA5 #A51F2F #2FA51F

tetradic

#1F2FA5 #A51F72 #A5951F #1FA552

square

#1F2FA5 #A51F72 #A5951F #1FA552

split-complementary

#1F2FA5 #A5521F #72A51F

monochromatic

#0C123E #152071 #1F2FA5 #2A3FD7 #5E6DE1

Accessibility & contrast

On white

10.46

#1F2FA5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#1F2FA5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2FA5

10.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2FA5	#FFFFFF	#000000	##FFFFFF
##1F2FA5	1.00	10.46	2.01	10.46
#FFFFFF	10.46	1.00	21.00	1.00
#000000	2.01	21.00	1.00	21.00
##FFFFFF	10.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0046A9

Deuteranopia (green-blind)

#0039A3

Tritanopia (blue-blind)

#005066

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #1f2fa5;
/* rgb */ color: rgb(31, 47, 165);
/* oklch */ color: oklch(38.5% 0.187 268.7);

Tailwind

colors: {
  custom: {
    50: '#7468c1',
    500: '#1f2fa5',
    950: '#000000',
  },
}

SCSS

$custom: #1f2fa5;
$custom-light: #7468c1;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2fa5",
  "rgb": {
    "r": 31,
    "g": 47,
    "b": 165
  },
  "hsl": {
    "h": 232.836,
    "s": 68.367,
    "l": 38.431
  },
  "oklch": {
    "l": 0.38479,
    "c": 0.18714,
    "h": 268.7
  },
  "luminance": 0.05041
}

Semantic roles & 50–950 ramp

primary

#1F2FA5

secondary

#C5B85B

accent

#D63DEB

background

#F7F6FC

surface

#EEEBF8

border

#C9C6D1

text

#0A0612

muted

#7C7A81

Preview Lab

Preview with #1F2FA5

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

Preview Lab → · Contrast checker → · Palette generator →