#1F35A5#1F35A5

#1F35A5 is a dark, vivid blue. Relative luminance 0.056; OKLCH L 39.5% C 0.180 H 267.8°. Best body text is #FFFFFF at 9.95:1 contrast (WCAG AA passes).

Color values

HEX	#1F35A5
RGB	rgb(31, 53, 165)
HSL	hsl(230, 68%, 38%)
HSV	hsv(230, 81%, 65%)
CMYK	cmyk(81.2%, 67.9%, 0%, 35.3%)
CIE-LAB	lab(28.26, 33.95, -62.26)
CIE-LCH	lch(28.26, 70.91, 298.60°)
OKLab	oklab(39.5% -0.007 -0.1803)
OKLCH	oklch(39.5% 0.18 267.8)
XYZ	xyz(8.6273, 5.5531, 36.2072)
Luminance	0.0555 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F35A5 #A58F1F

analogous

#1F78A5 #1F35A5 #4C1FA5

triadic

#1F35A5 #A51F35 #35A51F

tetradic

#1F35A5 #A51F78 #A58F1F #1FA54C

square

#1F35A5 #A51F78 #A58F1F #1FA54C

split-complementary

#1F35A5 #A54C1F #78A51F

monochromatic

#0C143E #152471 #1F35A5 #2A47D7 #5E73E1

Accessibility & contrast

On white

9.95

#1F35A5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.11

#1F35A5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F35A5

9.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F35A5	#FFFFFF	#000000	##FFFFFF
##1F35A5	1.00	9.95	2.11	9.95
#FFFFFF	9.95	1.00	21.00	1.00
#000000	2.11	21.00	1.00	21.00
##FFFFFF	9.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0049A8

Deuteranopia (green-blind)

#003CA3

Tritanopia (blue-blind)

#005468

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #1f35a5;
/* rgb */ color: rgb(31, 53, 165);
/* oklch */ color: oklch(39.5% 0.180 267.8);

Tailwind

colors: {
  custom: {
    50: '#736cc1',
    500: '#1f35a5',
    950: '#000000',
  },
}

SCSS

$custom: #1f35a5;
$custom-light: #736cc1;
$custom-dark: #000000;

JSON

{
  "hex": "#1f35a5",
  "rgb": {
    "r": 31,
    "g": 53,
    "b": 165
  },
  "hsl": {
    "h": 230.149,
    "s": 68.367,
    "l": 38.431
  },
  "oklch": {
    "l": 0.395,
    "c": 0.18046,
    "h": 267.8
  },
  "luminance": 0.05554
}

Semantic roles & 50–950 ramp

primary

#1F35A5

secondary

#C5B45B

accent

#CF3DEB

background

#F7F6FC

surface

#EEEBF8

border

#C9C6D1

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #1F35A5

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

Preview Lab → · Contrast checker → · Palette generator →