#1B435D#1B435D

#1B435D is a dark, moderate cyan. Relative luminance 0.050; OKLCH L 36.7% C 0.063 H 240.2°. Best body text is #FFFFFF at 10.46:1 contrast (WCAG AA passes).

Color values

HEX	#1B435D
RGB	rgb(27, 67, 93)
HSL	hsl(204, 55%, 24%)
HSV	hsv(204, 71%, 36%)
CMYK	cmyk(71%, 28%, 0%, 63.5%)
CIE-LAB	lab(26.84, -4.66, -19.55)
CIE-LCH	lch(26.84, 20.09, 256.59°)
OKLab	oklab(36.71% -0.0315 -0.055)
OKLCH	oklch(36.71% 0.063 240.2)
XYZ	xyz(4.4342, 5.0372, 11.0924)
Luminance	0.0504 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B435D #5D351B

analogous

#1B5D56 #1B435D #1B225D

triadic

#1B435D #5D1B43 #435D1B

tetradic

#1B435D #561B5D #5D351B #225D1B

square

#1B435D #561B5D #5D351B #225D1B

split-complementary

#1B435D #5D1B22 #5D561B

monochromatic

#071118 #0D212E #1B435D #29658C #3787BC

Accessibility & contrast

On white

10.46

#1B435D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#1B435D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B435D

10.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B435D	#FFFFFF	#000000	##FFFFFF
##1B435D	1.00	10.46	2.01	10.46
#FFFFFF	10.46	1.00	21.00	1.00
#000000	2.01	21.00	1.00	21.00
##FFFFFF	10.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#37435E

Deuteranopia (green-blind)

#2E3D5D

Tritanopia (blue-blind)

#00494C

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #1b435d;
/* rgb */ color: rgb(27, 67, 93);
/* oklch */ color: oklch(36.7% 0.063 240.2);

Tailwind

colors: {
  custom: {
    50: '#60778b',
    500: '#1b435d',
    950: '#000000',
  },
}

SCSS

$custom: #1b435d;
$custom-light: #60778b;
$custom-dark: #000000;

JSON

{
  "hex": "#1b435d",
  "rgb": {
    "r": 27,
    "g": 67,
    "b": 93
  },
  "hsl": {
    "h": 203.636,
    "s": 55,
    "l": 23.529
  },
  "oklch": {
    "l": 0.36709,
    "c": 0.06342,
    "h": 240.2
  },
  "luminance": 0.05038
}

Semantic roles & 50–950 ramp

primary

#1B435D

secondary

#936141

accent

#8449DE

background

#F5F7F8

surface

#EAEDF0

border

#C6C8CB

text

#05080C

muted

#797B7D

Preview Lab

Preview with #1B435D

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

Preview Lab → · Contrast checker → · Palette generator →