#1F35B0#1F35B0

#1F35B0 is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.6% C 0.195 H 267.7°. Best body text is #FFFFFF at 9.57:1 contrast (WCAG AA passes).

Color values

HEX	#1F35B0
RGB	rgb(31, 53, 176)
HSL	hsl(231, 70%, 41%)
HSV	hsv(231, 82%, 69%)
CMYK	cmyk(82.4%, 69.9%, 0%, 31%)
CIE-LAB	lab(29.34, 38.01, -67.08)
CIE-LCH	lch(29.34, 77.10, 299.53°)
OKLab	oklab(40.62% -0.0079 -0.1944)
OKLCH	oklch(40.62% 0.195 267.7)
XYZ	xyz(9.6719, 5.9709, 41.7086)
Luminance	0.0597 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.92

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F35B0 #B09A1F

analogous

#1F7DB0 #1F35B0 #521FB0

triadic

#1F35B0 #B01F35 #35B01F

tetradic

#1F35B0 #B01F7D #B09A1F #1FB052

square

#1F35B0 #B01F7D #B09A1F #1FB052

split-complementary

#1F35B0 #B0521F #7DB01F

monochromatic

#0D1648 #16257C #1F35B0 #314BDB #6579E4

Accessibility & contrast

On white

9.57

#1F35B0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.19

#1F35B0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F35B0

9.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F35B0	#FFFFFF	#000000	##FFFFFF
##1F35B0	1.00	9.57	2.19	9.57
#FFFFFF	9.57	1.00	21.00	1.00
#000000	2.19	21.00	1.00	21.00
##FFFFFF	9.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CB4

Deuteranopia (green-blind)

#003EAE

Tritanopia (blue-blind)

#00576E

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #1f35b0;
/* rgb */ color: rgb(31, 53, 176);
/* oklch */ color: oklch(40.6% 0.195 267.7);

Tailwind

colors: {
  custom: {
    50: '#766cc9',
    500: '#1f35b0',
    950: '#000000',
  },
}

SCSS

$custom: #1f35b0;
$custom-light: #766cc9;
$custom-dark: #000000;

JSON

{
  "hex": "#1f35b0",
  "rgb": {
    "r": 31,
    "g": 53,
    "b": 176
  },
  "hsl": {
    "h": 230.897,
    "s": 70.048,
    "l": 40.588
  },
  "oklch": {
    "l": 0.40615,
    "c": 0.19454,
    "h": 267.7
  },
  "luminance": 0.05972
}

Semantic roles & 50–950 ramp

primary

#1F35B0

secondary

#C9B962

accent

#D23BED

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #1F35B0

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

Preview Lab → · Contrast checker → · Palette generator →