#121A33
Closest named color: Rich Black (#0D1B2A). oklch(22.5% 0.05 268.8), rgb(18, 26, 51).
Aa
White text reads best on this color (17.19:1).
About this color
#121A33 is a very dark, muted blue. In OKLCH its lightness is 22%, its chroma 0.050 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.021 away. White text reads best on it, at 17.19:1.
| Hue family | Blues |
| Lightness | very dark (22%) |
| Chroma | muted (0.050) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.22:1 |
| White text | 17.19:1 |
Values
| HEX | #121A33 |
| RGB | rgb(18, 26, 51) |
| HSL | hsl(225, 48%, 14%) |
| OKLCH | oklch(22.5% 0.05 268.8) |
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 #121A33 | 17.19:1 | AAA | Lc -106.3 | Preferred for body text |
| Black text on #121A33 | 1.22:1 | Fails | Lc 0.0 | Not readable |
| #121A33 text on white | 17.19:1 | AAA | Lc 104.0 | Preferred for body text |
| #121A33 text on black | 1.22:1 | 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
#D0D9F0
oklch(88.6% 0.033 268.7)
-
Step 300
300
#B1C0E8
oklch(81% 0.059 268.9)
-
Step 400
400
#889EDD
oklch(70.7% 0.096 269.1)
-
Step 500
500
#6B85D3
oklch(63.1% 0.122 268.8)
-
Step 600
600
#536DC0
oklch(55.5% 0.132 268.7)
-
Step 700
700
#445BA6
oklch(49.1% 0.123 268.7)
-
Step 800
800
#384B86
oklch(42.8% 0.101 268.5)
-
Step 900
900
#303F6C
oklch(37.8% 0.08 268.5)
-
Step 950
950 (this color)
#121A33
oklch(22.5% 0.05 268.8)
#121A33 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) | #101D34 | 0.010 |
| Deuteranopia (no green cones) | #0C1A32 | 0.009 |
| Tritanopia (no blue cones) | #031F24 | 0.043 |
| Achromatopsia (no color) | #1B1B1B | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #121A33
#121A33
oklch(22.5% 0.05 268.8)
- #241A00
#241A00
oklch(22.4% 0.046 89.1)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes and gradients that use #121A33
These curated palettes and gradients contain exactly #121A33. Open one to see the full color scheme around it.
Palettes
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.021
- Dark #1B2431 ΔE 0.041
- Oxford Blue #1B263B ΔE 0.045
- Navy Blue #001146 ΔE 0.055
- Jet #212529 ΔE 0.056
- Rich Navy #001219 ΔE 0.067
- Midnight Purple #280137 ΔE 0.076
- Dark Indigo #1F0954 ΔE 0.077
Use #121A33 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.