#1F488E#1F488E

#1F488E is a dark, vivid blue. Relative luminance 0.069; OKLCH L 41.4% C 0.125 H 260.4°. Best body text is #FFFFFF at 8.84:1 contrast (WCAG AA passes).

Color values

HEX	#1F488E
RGB	rgb(31, 72, 142)
HSL	hsl(218, 64%, 34%)
HSV	hsv(218, 78%, 56%)
CMYK	cmyk(78.2%, 49.3%, 0%, 44.3%)
CIE-LAB	lab(31.53, 12.08, -42.93)
CIE-LCH	lch(31.53, 44.60, 285.71°)
OKLab	oklab(41.36% -0.0209 -0.1233)
OKLCH	oklch(41.36% 0.125 260.4)
XYZ	xyz(7.7632, 6.8781, 26.5044)
Luminance	0.0688 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F488E #8E651F

analogous

#1F808E #1F488E #2E1F8E

triadic

#1F488E #8E1F48 #488E1F

tetradic

#1F488E #8E1F80 #8E651F #1F8E2E

square

#1F488E #8E1F80 #8E651F #1F8E2E

split-complementary

#1F488E #8E2E1F #808E1F

monochromatic

#09152A #142F5C #1F488E #2A61C0 #4F82D9

Accessibility & contrast

On white

8.84

#1F488E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.38

#1F488E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F488E

8.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F488E	#FFFFFF	#000000	##FFFFFF
##1F488E	1.00	8.84	2.38	8.84
#FFFFFF	8.84	1.00	21.00	1.00
#000000	2.38	21.00	1.00	21.00
##FFFFFF	8.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#215091

Deuteranopia (green-blind)

#00458D

Tritanopia (blue-blind)

#005964

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #1f488e;
/* rgb */ color: rgb(31, 72, 142);
/* oklch */ color: oklch(41.4% 0.125 260.4);

Tailwind

colors: {
  custom: {
    50: '#6c7aaf',
    500: '#1f488e',
    950: '#000000',
  },
}

SCSS

$custom: #1f488e;
$custom-light: #6c7aaf;
$custom-dark: #000000;

JSON

{
  "hex": "#1f488e",
  "rgb": {
    "r": 31,
    "g": 72,
    "b": 142
  },
  "hsl": {
    "h": 217.838,
    "s": 64.162,
    "l": 33.922
  },
  "oklch": {
    "l": 0.41362,
    "c": 0.12508,
    "h": 260.4
  },
  "luminance": 0.06879
}

Semantic roles & 50–950 ramp

primary

#1F488E

secondary

#BB934D

accent

#AA41E7

background

#F7F7FA

surface

#EDEDF5

border

#C8C8CF

text

#080910

muted

#7B7B7F

Preview Lab

Preview with #1F488E

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

Preview Lab → · Contrast checker → · Palette generator →