#1F35A9#1F35A9

#1F35A9 is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.9% C 0.186 H 267.7°. Best body text is #FFFFFF at 9.81:1 contrast (WCAG AA passes).

Color values

HEX	#1F35A9
RGB	rgb(31, 53, 169)
HSL	hsl(230, 69%, 39%)
HSV	hsv(230, 82%, 66%)
CMYK	cmyk(81.7%, 68.6%, 0%, 33.7%)
CIE-LAB	lab(28.65, 35.44, -64.03)
CIE-LCH	lch(28.65, 73.18, 298.96°)
OKLab	oklab(39.9% -0.0073 -0.1855)
OKLCH	oklch(39.9% 0.186 267.7)
XYZ	xyz(8.9971, 5.7010, 38.1546)
Luminance	0.0570 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F35A9 #A9931F

analogous

#1F7AA9 #1F35A9 #4E1FA9

triadic

#1F35A9 #A91F35 #35A91F

tetradic

#1F35A9 #A91F7A #A9931F #1FA94E

square

#1F35A9 #A91F7A #A9931F #1FA94E

split-complementary

#1F35A9 #A94E1F #7AA91F

monochromatic

#0C1542 #162575 #1F35A9 #2D48D8 #6075E2

Accessibility & contrast

On white

9.81

#1F35A9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.14

#1F35A9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F35A9

9.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F35A9	#FFFFFF	#000000	##FFFFFF
##1F35A9	1.00	9.81	2.14	9.81
#FFFFFF	9.81	1.00	21.00	1.00
#000000	2.14	21.00	1.00	21.00
##FFFFFF	9.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004AAD

Deuteranopia (green-blind)

#003DA7

Tritanopia (blue-blind)

#00556A

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #1f35a9;
/* rgb */ color: rgb(31, 53, 169);
/* oklch */ color: oklch(39.9% 0.186 267.7);

Tailwind

colors: {
  custom: {
    50: '#746cc4',
    500: '#1f35a9',
    950: '#000000',
  },
}

SCSS

$custom: #1f35a9;
$custom-light: #746cc4;
$custom-dark: #000000;

JSON

{
  "hex": "#1f35a9",
  "rgb": {
    "r": 31,
    "g": 53,
    "b": 169
  },
  "hsl": {
    "h": 230.435,
    "s": 69,
    "l": 39.216
  },
  "oklch": {
    "l": 0.39902,
    "c": 0.18562,
    "h": 267.7
  },
  "luminance": 0.05702
}

Semantic roles & 50–950 ramp

primary

#1F35A9

secondary

#C7B65D

accent

#D03CEC

background

#F7F6FC

surface

#EEEBF8

border

#C9C6D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #1F35A9

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

Preview Lab → · Contrast checker → · Palette generator →