#1F458D#1F458D

#1F458D is a dark, vivid blue. Relative luminance 0.065; OKLCH L 40.6% C 0.127 H 261.7°. Best body text is #FFFFFF at 9.15:1 contrast (WCAG AA passes).

Color values

HEX	#1F458D
RGB	rgb(31, 69, 141)
HSL	hsl(219, 64%, 34%)
HSV	hsv(219, 78%, 55%)
CMYK	cmyk(78%, 51.1%, 0%, 44.7%)
CIE-LAB	lab(30.57, 13.73, -43.87)
CIE-LCH	lch(30.57, 45.96, 287.38°)
OKLab	oklab(40.61% -0.0185 -0.1261)
OKLCH	oklch(40.61% 0.127 261.7)
XYZ	xyz(7.4992, 6.4698, 26.0477)
Luminance	0.0647 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F458D #8D671F

analogous

#1F7C8D #1F458D #301F8D

triadic

#1F458D #8D1F45 #458D1F

tetradic

#1F458D #8D1F7C #8D671F #1F8D30

square

#1F458D #8D1F7C #8D671F #1F8D30

split-complementary

#1F458D #8D301F #7C8D1F

monochromatic

#091429 #142C5B #1F458D #2A5EBF #4E7ED8

Accessibility & contrast

On white

9.15

#1F458D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.29

#1F458D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F458D

9.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F458D	#FFFFFF	#000000	##FFFFFF
##1F458D	1.00	9.15	2.29	9.15
#FFFFFF	9.15	1.00	21.00	1.00
#000000	2.29	21.00	1.00	21.00
##FFFFFF	9.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A4D90

Deuteranopia (green-blind)

#00438C

Tritanopia (blue-blind)

#005662

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #1f458d;
/* rgb */ color: rgb(31, 69, 141);
/* oklch */ color: oklch(40.6% 0.127 261.7);

Tailwind

colors: {
  custom: {
    50: '#6c78af',
    500: '#1f458d',
    950: '#000000',
  },
}

SCSS

$custom: #1f458d;
$custom-light: #6c78af;
$custom-dark: #000000;

JSON

{
  "hex": "#1f458d",
  "rgb": {
    "r": 31,
    "g": 69,
    "b": 141
  },
  "hsl": {
    "h": 219.273,
    "s": 63.953,
    "l": 33.725
  },
  "oklch": {
    "l": 0.40605,
    "c": 0.12748,
    "h": 261.7
  },
  "luminance": 0.06471
}

Semantic roles & 50–950 ramp

primary

#1F458D

secondary

#BB954D

accent

#AE41E7

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#080810

muted

#7A7B7F

Preview Lab

Preview with #1F458D

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

Preview Lab → · Contrast checker → · Palette generator →