#1F4B98#1F4B98

#1F4B98 is a dark, vivid blue. Relative luminance 0.076; OKLCH L 42.8% C 0.135 H 260.7°. Best body text is #FFFFFF at 8.34:1 contrast (WCAG AA passes).

Color values

HEX	#1F4B98
RGB	rgb(31, 75, 152)
HSL	hsl(218, 66%, 36%)
HSV	hsv(218, 80%, 60%)
CMYK	cmyk(79.6%, 50.7%, 0%, 40.4%)
CIE-LAB	lab(33.11, 14.04, -46.47)
CIE-LCH	lch(33.11, 48.55, 286.82°)
OKLab	oklab(42.8% -0.0219 -0.1337)
OKLCH	oklch(42.8% 0.135 260.7)
XYZ	xyz(8.7466, 7.5894, 30.7036)
Luminance	0.0759 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4B98 #986C1F

analogous

#1F8798 #1F4B98 #301F98

triadic

#1F4B98 #981F4B #4B981F

tetradic

#1F4B98 #981F87 #986C1F #1F9830

square

#1F4B98 #981F87 #986C1F #1F9830

split-complementary

#1F4B98 #98301F #87981F

monochromatic

#0A1932 #153265 #1F4B98 #2964CB #5586DC

Accessibility & contrast

On white

8.34

#1F4B98 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.52

#1F4B98 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4B98

8.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4B98	#FFFFFF	#000000	##FFFFFF
##1F4B98	1.00	8.34	2.52	8.34
#FFFFFF	8.34	1.00	21.00	1.00
#000000	2.52	21.00	1.00	21.00
##FFFFFF	8.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1C549B

Deuteranopia (green-blind)

#004996

Tritanopia (blue-blind)

#005E6A

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #1f4b98;
/* rgb */ color: rgb(31, 75, 152);
/* oklch */ color: oklch(42.8% 0.135 260.7);

Tailwind

colors: {
  custom: {
    50: '#6e7cb7',
    500: '#1f4b98',
    950: '#000000',
  },
}

SCSS

$custom: #1f4b98;
$custom-light: #6e7cb7;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4b98",
  "rgb": {
    "r": 31,
    "g": 75,
    "b": 152
  },
  "hsl": {
    "h": 218.182,
    "s": 66.12,
    "l": 35.882
  },
  "oklch": {
    "l": 0.42801,
    "c": 0.13547,
    "h": 260.7
  },
  "luminance": 0.0759
}

Semantic roles & 50–950 ramp

primary

#1F4B98

secondary

#C09853

accent

#AB3FE9

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#080911

muted

#7B7B80

Preview Lab

Preview with #1F4B98

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

Preview Lab → · Contrast checker → · Palette generator →