#1B2F74#1B2F74

#1B2F74 is a dark, vivid blue. Relative luminance 0.035; OKLCH L 33.5% C 0.121 H 267.2°. Best body text is #FFFFFF at 12.31:1 contrast (WCAG AA passes).

Color values

HEX	#1B2F74
RGB	rgb(27, 47, 116)
HSL	hsl(227, 62%, 28%)
HSV	hsv(227, 77%, 45%)
CMYK	cmyk(76.7%, 59.5%, 0%, 54.5%)
CIE-LAB	lab(22.04, 18.51, -42.02)
CIE-LCH	lch(22.04, 45.91, 293.77°)
OKLab	oklab(33.49% -0.006 -0.1212)
OKLCH	oklch(33.49% 0.121 267.2)
XYZ	xyz(4.6198, 3.5265, 16.9568)
Luminance	0.0353 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2F74 #74601B

analogous

#1B5B74 #1B2F74 #331B74

triadic

#1B2F74 #741B2F #2F741B

tetradic

#1B2F74 #741B5B #74601B #1B7433

square

#1B2F74 #741B5B #74601B #1B7433

split-complementary

#1B2F74 #74331B #5B741B

monochromatic

#060A19 #0F1B42 #1B2F74 #2743A6 #395BD1

Accessibility & contrast

On white

12.31

#1B2F74 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.71

#1B2F74 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2F74

12.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2F74	#FFFFFF	#000000	##FFFFFF
##1B2F74	1.00	12.31	1.71	12.31
#FFFFFF	12.31	1.00	21.00	1.00
#000000	1.71	21.00	1.00	21.00
##FFFFFF	12.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003976

Deuteranopia (green-blind)

#003173

Tritanopia (blue-blind)

#00404C

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #1b2f74;
/* rgb */ color: rgb(27, 47, 116);
/* oklch */ color: oklch(33.5% 0.121 267.2);

Tailwind

colors: {
  custom: {
    50: '#65679d',
    500: '#1b2f74',
    950: '#000000',
  },
}

SCSS

$custom: #1b2f74;
$custom-light: #65679d;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2f74",
  "rgb": {
    "r": 27,
    "g": 47,
    "b": 116
  },
  "hsl": {
    "h": 226.517,
    "s": 62.238,
    "l": 28.039
  },
  "oklch": {
    "l": 0.33485,
    "c": 0.12132,
    "h": 267.2
  },
  "luminance": 0.03527
}

Semantic roles & 50–950 ramp

primary

#1B2F74

secondary

#A99242

accent

#C142E5

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060E

muted

#7A7A7E

Preview Lab

Preview with #1B2F74

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

Preview Lab → · Contrast checker → · Palette generator →