#121834
Closest named color: Rich Black (#0D1B2A). oklch(22% 0.055 272.1), rgb(18, 24, 52).
Aa
White text reads best on this color (17.41:1).
About this color
#121834 is a very dark, muted blue. In OKLCH its lightness is 22%, its chroma 0.055 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.025 away. White text reads best on it, at 17.41:1.
| Hue family | Blues |
| Lightness | very dark (22%) |
| Chroma | muted (0.055) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.20:1 |
| White text | 17.41:1 |
Values
| HEX | #121834 |
| RGB | rgb(18, 24, 52) |
| HSL | hsl(229, 49%, 14%) |
| OKLCH | oklch(22% 0.055 272.1) |
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 #121834 | 17.41:1 | AAA | Lc -106.5 | Preferred for body text |
| Black text on #121834 | 1.20:1 | Fails | Lc 0.0 | Not readable |
| #121834 text on white | 17.41:1 | AAA | Lc 104.2 | Preferred for body text |
| #121834 text on black | 1.20:1 | 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
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E5E9F7
oklch(93.5% 0.019 273.2)
-
Step 200
200
#D0D8F2
oklch(88.4% 0.037 272)
-
Step 300
300
#B2BFEC
oklch(81% 0.065 272.3)
-
Step 400
400
#8A9CE2
oklch(70.6% 0.105 272.4)
-
Step 500
500
#6E82DA
oklch(63.1% 0.134 272.4)
-
Step 600
600
#576AC7
oklch(55.6% 0.145 272.2)
-
Step 700
700
#4758AC
oklch(49.1% 0.135 272)
-
Step 800
800
#3A488B
oklch(42.6% 0.112 272)
-
Step 900
900
#323D6F
oklch(37.7% 0.087 272.3)
-
Step 950
950 (this color)
#121834
oklch(22% 0.055 272.1)
#121834 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) | #0B1B35 | 0.013 |
| Deuteranopia (no green cones) | #071933 | 0.015 |
| Tritanopia (no blue cones) | #021E23 | 0.049 |
| Achromatopsia (no color) | #1A1A1A | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #121834
#121834
oklch(22% 0.055 272.1)
- #221A00
#221A00
oklch(22.1% 0.045 93.2)
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 #121834, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.025
- Dark #1B2431 ΔE 0.048
- Navy Blue #001146 ΔE 0.050
- Oxford Blue #1B263B ΔE 0.051
- Jet #212529 ΔE 0.063
- Rich Navy #001219 ΔE 0.066
- Midnight Purple #280137 ΔE 0.071
- Night Blue #040348 ΔE 0.071
Use #121834 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.