#121B34
Closest named color: Rich Black (#0D1B2A). oklch(22.8% 0.05 267.4), rgb(18, 27, 52).
Aa
White text reads best on this color (17.04:1).
About this color
#121B34 is a very dark, muted blue. In OKLCH its lightness is 23%, its chroma 0.050 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.022 away. White text reads best on it, at 17.04:1.
| Hue family | Blues |
| Lightness | very dark (23%) |
| Chroma | muted (0.050) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.23:1 |
| White text | 17.04:1 |
Values
| HEX | #121B34 |
| RGB | rgb(18, 27, 52) |
| HSL | hsl(224, 49%, 14%) |
| OKLCH | oklch(22.8% 0.05 267.4) |
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 #121B34 | 17.04:1 | AAA | Lc -106.2 | Preferred for body text |
| Black text on #121B34 | 1.23:1 | Fails | Lc 0.0 | Not readable |
| #121B34 text on white | 17.04:1 | AAA | Lc 103.9 | Preferred for body text |
| #121B34 text on black | 1.23:1 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E5EAF6
oklch(93.7% 0.017 267.8)
-
Step 200
200
#CFD9F0
oklch(88.5% 0.033 266.9)
-
Step 300
300
#B0C0E8
oklch(80.9% 0.059 267.9)
-
Step 400
400
#869FDD
oklch(70.8% 0.096 267.1)
-
Step 500
500
#6986D3
oklch(63.2% 0.121 267.3)
-
Step 600
600
#516EC0
oklch(55.6% 0.132 267.4)
-
Step 700
700
#425CA6
oklch(49.2% 0.122 267.3)
-
Step 800
800
#364B87
oklch(42.7% 0.103 267.4)
-
Step 900
900
#2F3F6C
oklch(37.7% 0.08 267.7)
-
Step 950
950 (this color)
#121B34
oklch(22.8% 0.05 267.4)
#121B34 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) | #111E35 | 0.010 |
| Deuteranopia (no green cones) | #0C1B33 | 0.009 |
| Tritanopia (no blue cones) | #022024 | 0.045 |
| Achromatopsia (no color) | #1C1C1C | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #121B34
#121B34
oklch(22.8% 0.05 267.4)
- #261B00
#261B00
oklch(22.9% 0.047 87.6)
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 #121B34, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.022
- Dark #1B2431 ΔE 0.038
- Oxford Blue #1B263B ΔE 0.042
- Jet #212529 ΔE 0.054
- Navy Blue #001146 ΔE 0.055
- Rich Navy #001219 ΔE 0.069
- Dark Indigo #1F0954 ΔE 0.076
- Midnight Purple #280137 ΔE 0.078
Use #121B34 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.