#121A2A
Closest named color: Rich Black (#0D1B2A). oklch(21.8% 0.034 263.5), rgb(18, 26, 42).
Aa
White text reads best on this color (17.39:1).
About this color
#121A2A is a very dark, muted blue. In OKLCH its lightness is 22%, its chroma 0.034 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.008 away. White text reads best on it, at 17.39:1.
| Hue family | Blues |
| Lightness | very dark (22%) |
| Chroma | muted (0.034) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.20:1 |
| White text | 17.39:1 |
Values
| HEX | #121A2A |
| RGB | rgb(18, 26, 42) |
| HSL | hsl(220, 40%, 12%) |
| OKLCH | oklch(21.8% 0.034 263.5) |
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 #121A2A | 17.39:1 | AAA | Lc -106.5 | Preferred for body text |
| Black text on #121A2A | 1.20:1 | Fails | Lc 0.0 | Not readable |
| #121A2A text on white | 17.39:1 | AAA | Lc 104.2 | Preferred for body text |
| #121A2A 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
#F3F5F9
oklch(97% 0.006 264.5)
-
Step 100
100
#E6EAF2
oklch(93.6% 0.012 264.5)
-
Step 200
200
#D2D9E8
oklch(88.4% 0.022 265.8)
-
Step 300
300
#B3C1DB
oklch(80.9% 0.04 262.9)
-
Step 400
400
#8CA1C9
oklch(70.7% 0.063 263.1)
-
Step 500
500
#7089BC
oklch(63.1% 0.083 264)
-
Step 600
600
#5872A8
oklch(55.5% 0.09 264.1)
-
Step 700
700
#486090
oklch(49.1% 0.083 263.4)
-
Step 800
800
#3B4E75
oklch(42.6% 0.069 263.9)
-
Step 900
900
#33415E
oklch(37.6% 0.053 264.2)
-
Step 950
950 (this color)
#121A2A
oklch(21.8% 0.034 263.5)
#121A2A 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) | #141B2B | 0.005 |
| Deuteranopia (no green cones) | #12192A | 0.004 |
| Tritanopia (no blue cones) | #091D20 | 0.029 |
| Achromatopsia (no color) | #1A1A1A | 0.034 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #121A2A
#121A2A
oklch(21.8% 0.034 263.5)
- #221907
#221907
oklch(22% 0.033 83.1)
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 #121A2A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.008
- Dark #1B2431 ΔE 0.040
- Jet #212529 ΔE 0.050
- Oxford Blue #1B263B ΔE 0.051
- Rich Navy #001219 ΔE 0.054
- Navy Blue #001146 ΔE 0.069
- Almost Black #070D0D ΔE 0.073
- Midnight Purple #280137 ΔE 0.084
Use #121A2A 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.