#1B122D
Closest named color: Rich Black (#0D1B2A). oklch(21% 0.053 297), rgb(27, 18, 45).
Aa
White text reads best on this color (17.93:1).
About this color
#1B122D is a very dark, muted purple. In OKLCH its lightness is 21%, its chroma 0.053 and its hue 297°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.038 away. White text reads best on it, at 17.93:1.
| Hue family | Purples |
| Lightness | very dark (21%) |
| Chroma | muted (0.053) |
| Temperature | in between |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.17:1 |
| White text | 17.93:1 |
Values
| HEX | #1B122D |
| RGB | rgb(27, 18, 45) |
| HSL | hsl(260, 43%, 12%) |
| OKLCH | oklch(21% 0.053 297) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #1B122D | 17.93:1 | AAA | Lc -106.8 | Preferred for body text |
| Black text on #1B122D | 1.17:1 | Fails | Lc 0.0 | Not readable |
| #1B122D text on white | 17.93:1 | AAA | Lc 104.6 | Preferred for body text |
| #1B122D text on black | 1.17:1 | Fails | Lc 0.0 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 950.
-
Step 50
50
#F6F4FA
oklch(97% 0.008 301.4)
-
Step 100
100
#EBE8F5
oklch(93.7% 0.018 296.6)
-
Step 200
200
#DBD5EE
oklch(88.5% 0.035 296.7)
-
Step 300
300
#C4B9E5
oklch(80.9% 0.062 296.4)
-
Step 400
400
#A793D7
oklch(70.6% 0.1 297.3)
-
Step 500
500
#9277CD
oklch(63.1% 0.128 297)
-
Step 600
600
#7D5FB9
oklch(55.6% 0.137 297.1)
-
Step 700
700
#694EA0
oklch(49.1% 0.128 296.6)
-
Step 800
800
#564081
oklch(42.7% 0.106 297.3)
-
Step 900
900
#473768
oklch(37.8% 0.083 297.3)
-
Step 950
950 (this color)
#1B122D
oklch(21% 0.053 297)
#1B122D with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #09172E | 0.033 |
| Deuteranopia (no green cones) | #0B172C | 0.031 |
| Tritanopia (no blue cones) | #17171D | 0.041 |
| Achromatopsia (no color) | #171717 | 0.053 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1B122D
#1B122D
oklch(21% 0.053 297)
- #171B00
#171B00
oklch(21.1% 0.049 117.1)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #1B122D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.038
- Midnight Purple #280137 ΔE 0.053
- Very Dark Purple #2A0134 ΔE 0.054
- Dark #1B2431 ΔE 0.060
- Navy Blue #001146 ΔE 0.066
- Oxford Blue #1B263B ΔE 0.067
- Rich Navy #001219 ΔE 0.067
- Eggplant #380835 ΔE 0.069
Use #1B122D in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.