#1F54A0#1F54A0

#1F54A0 is a mid, vivid blue. Relative luminance 0.092; OKLCH L 45.4% C 0.135 H 258.1°. Best body text is #FFFFFF at 7.41:1 contrast (WCAG AA passes).

Color values

HEX	#1F54A0
RGB	rgb(31, 84, 160)
HSL	hsl(215, 68%, 37%)
HSV	hsv(215, 81%, 63%)
CMYK	cmyk(80.6%, 47.5%, 0%, 37.3%)
CIE-LAB	lab(36.31, 11.19, -46.15)
CIE-LCH	lch(36.31, 47.49, 283.63°)
OKLab	oklab(45.43% -0.0279 -0.1325)
OKLCH	oklch(45.43% 0.135 258.1)
XYZ	xyz(10.0782, 9.1688, 34.4895)
Luminance	0.0917 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F54A0 #A06B1F

analogous

#1F94A0 #1F54A0 #2B1FA0

triadic

#1F54A0 #A01F54 #54A01F

tetradic

#1F54A0 #A01F94 #A06B1F #1FA02B

square

#1F54A0 #A01F94 #A06B1F #1FA02B

split-complementary

#1F54A0 #A02B1F #94A01F

monochromatic

#0B1E39 #15396D #1F54A0 #296FD3 #5A91DF

Accessibility & contrast

On white

7.41

#1F54A0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.83

#1F54A0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F54A0

7.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F54A0	#FFFFFF	#000000	##FFFFFF
##1F54A0	1.00	7.41	2.83	7.41
#FFFFFF	7.41	1.00	21.00	1.00
#000000	2.83	21.00	1.00	21.00
##FFFFFF	7.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A5CA3

Deuteranopia (green-blind)

#04509E

Tritanopia (blue-blind)

#006672

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #1f54a0;
/* rgb */ color: rgb(31, 84, 160);
/* oklch */ color: oklch(45.4% 0.135 258.1);

Tailwind

colors: {
  custom: {
    50: '#7083bd',
    500: '#1f54a0',
    950: '#000000',
  },
}

SCSS

$custom: #1f54a0;
$custom-light: #7083bd;
$custom-dark: #000000;

JSON

{
  "hex": "#1f54a0",
  "rgb": {
    "r": 31,
    "g": 84,
    "b": 160
  },
  "hsl": {
    "h": 215.349,
    "s": 67.539,
    "l": 37.451
  },
  "oklch": {
    "l": 0.4543,
    "c": 0.13545,
    "h": 258.1
  },
  "luminance": 0.0917
}

Semantic roles & 50–950 ramp

primary

#1F54A0

secondary

#C39758

accent

#A33DEA

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #1F54A0

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

Preview Lab → · Contrast checker → · Palette generator →