#1F4D8E#1F4D8E

#1F4D8E is a dark, moderate blue. Relative luminance 0.076; OKLCH L 42.5% C 0.119 H 257.7°. Best body text is #FFFFFF at 8.37:1 contrast (WCAG AA passes).

Color values

HEX	#1F4D8E
RGB	rgb(31, 77, 142)
HSL	hsl(215, 64%, 34%)
HSV	hsv(215, 78%, 56%)
CMYK	cmyk(78.2%, 45.8%, 0%, 44.3%)
CIE-LAB	lab(33.03, 8.69, -40.52)
CIE-LCH	lch(33.03, 41.44, 282.11°)
OKLab	oklab(42.52% -0.0253 -0.1161)
OKLCH	oklch(42.52% 0.119 257.7)
XYZ	xyz(8.0996, 7.5511, 26.6166)
Luminance	0.0755 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4D8E #8E601F

analogous

#1F858E #1F4D8E #291F8E

triadic

#1F4D8E #8E1F4D #4D8E1F

tetradic

#1F4D8E #8E1F85 #8E601F #1F8E29

square

#1F4D8E #8E1F85 #8E601F #1F8E29

split-complementary

#1F4D8E #8E291F #858E1F

monochromatic

#09172A #14325C #1F4D8E #2A68C0 #4F88D9

Accessibility & contrast

On white

8.37

#1F4D8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#1F4D8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4D8E

8.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4D8E	#FFFFFF	#000000	##FFFFFF
##1F4D8E	1.00	8.37	2.51	8.37
#FFFFFF	8.37	1.00	21.00	1.00
#000000	2.51	21.00	1.00	21.00
##FFFFFF	8.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C5390

Deuteranopia (green-blind)

#14498D

Tritanopia (blue-blind)

#005C66

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #1f4d8e;
/* rgb */ color: rgb(31, 77, 142);
/* oklch */ color: oklch(42.5% 0.119 257.7);

Tailwind

colors: {
  custom: {
    50: '#6c7eaf',
    500: '#1f4d8e',
    950: '#000000',
  },
}

SCSS

$custom: #1f4d8e;
$custom-light: #6c7eaf;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4d8e",
  "rgb": {
    "r": 31,
    "g": 77,
    "b": 142
  },
  "hsl": {
    "h": 215.135,
    "s": 64.162,
    "l": 33.922
  },
  "oklch": {
    "l": 0.42519,
    "c": 0.11884,
    "h": 257.7
  },
  "luminance": 0.07552
}

Semantic roles & 50–950 ramp

primary

#1F4D8E

secondary

#BB8E4D

accent

#A241E7

background

#F6F7FA

surface

#ECEEF4

border

#C7C9CE

text

#080910

muted

#7A7B7F

Preview Lab

Preview with #1F4D8E

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

Preview Lab → · Contrast checker → · Palette generator →