#121A29
Closest named color: Rich Black (#0D1B2A). oklch(21.8% 0.032 262.5), rgb(18, 26, 41).
Aa
White text reads best on this color (17.42:1).
About this color
#121A29 is a very dark, muted blue. In OKLCH its lightness is 22%, its chroma 0.032 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.007 away. White text reads best on it, at 17.42:1.
| Hue family | Blues |
| Lightness | very dark (22%) |
| Chroma | muted (0.032) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.20:1 |
| White text | 17.42:1 |
Values
| HEX | #121A29 |
| RGB | rgb(18, 26, 41) |
| HSL | hsl(219, 39%, 12%) |
| OKLCH | oklch(21.8% 0.032 262.5) |
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 #121A29 | 17.42:1 | AAA | Lc -106.5 | Preferred for body text |
| Black text on #121A29 | 1.20:1 | Fails | Lc 0.0 | Not readable |
| #121A29 text on white | 17.42:1 | AAA | Lc 104.2 | Preferred for body text |
| #121A29 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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E6EAF1
oklch(93.6% 0.01 261.8)
-
Step 200
200
#D2D9E8
oklch(88.4% 0.022 265.8)
-
Step 300
300
#B4C1DA
oklch(80.9% 0.038 263.6)
-
Step 400
400
#8CA1C7
oklch(70.6% 0.061 262.2)
-
Step 500
500
#708AB9
oklch(63.2% 0.077 262)
-
Step 600
600
#5873A5
oklch(55.6% 0.085 262.2)
-
Step 700
700
#48608D
oklch(49% 0.078 262.4)
-
Step 800
800
#3C4F73
oklch(42.8% 0.065 262.6)
-
Step 900
900
#33425D
oklch(37.8% 0.05 261.8)
-
Step 950
950 (this color)
#121A29
oklch(21.8% 0.032 262.5)
#121A29 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) | #151B2A | 0.007 |
| Deuteranopia (no green cones) | #121929 | 0.004 |
| Tritanopia (no blue cones) | #091D1F | 0.029 |
| Achromatopsia (no color) | #1A1A1A | 0.032 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #121A29
#121A29
oklch(21.8% 0.032 262.5)
- #211908
#211908
oklch(21.8% 0.032 84.6)
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 #121A29, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.007
- Dark #1B2431 ΔE 0.040
- Jet #212529 ΔE 0.050
- Oxford Blue #1B263B ΔE 0.052
- Rich Navy #001219 ΔE 0.053
- Navy Blue #001146 ΔE 0.071
- Almost Black #070D0D ΔE 0.072
- Midnight Purple #280137 ΔE 0.085
Use #121A29 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.