#121E36
Closest named color: Rich Black (#0D1B2A). oklch(23.8% 0.049 263), rgb(18, 30, 54).
Aa
White text reads best on this color (16.60:1).
About this color
#121E36 is a very dark, muted blue. In OKLCH its lightness is 24%, its chroma 0.049 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.026 away. White text reads best on it, at 16.60:1.
| Hue family | Blues |
| Lightness | very dark (24%) |
| Chroma | muted (0.049) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.26:1 |
| White text | 16.60:1 |
Values
| HEX | #121E36 |
| RGB | rgb(18, 30, 54) |
| HSL | hsl(220, 50%, 14%) |
| OKLCH | oklch(23.8% 0.049 263) |
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 #121E36 | 16.60:1 | AAA | Lc -105.9 | Preferred for body text |
| Black text on #121E36 | 1.26:1 | Fails | Lc 0.0 | Not readable |
| #121E36 text on white | 16.60:1 | AAA | Lc 103.5 | Preferred for body text |
| #121E36 text on black | 1.26:1 | 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
#F3F6FB
oklch(97.2% 0.007 260.7)
-
Step 100
100
#E4EAF6
oklch(93.6% 0.017 264.5)
-
Step 200
200
#CEDAEF
oklch(88.6% 0.032 261.7)
-
Step 300
300
#ADC1E7
oklch(80.9% 0.058 263.2)
-
Step 400
400
#82A0DB
oklch(70.6% 0.093 263.4)
-
Step 500
500
#6288D2
oklch(63.1% 0.12 262.8)
-
Step 600
600
#4A70BF
oklch(55.6% 0.13 263.4)
-
Step 700
700
#3B5EA5
oklch(49.2% 0.121 262.9)
-
Step 800
800
#314D85
oklch(42.7% 0.099 262.8)
-
Step 900
900
#2B406B
oklch(37.6% 0.079 263.4)
-
Step 950
950 (this color)
#121E36
oklch(23.8% 0.049 263)
#121E36 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) | #142037 | 0.008 |
| Deuteranopia (no green cones) | #101D35 | 0.005 |
| Tritanopia (no blue cones) | #002327 | 0.044 |
| Achromatopsia (no color) | #1E1E1E | 0.049 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #121E36
#121E36
oklch(23.8% 0.049 263)
- #2A1C00
#2A1C00
oklch(23.8% 0.049 82.5)
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 #121E36, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.026
- Dark #1B2431 ΔE 0.030
- Oxford Blue #1B263B ΔE 0.032
- Jet #212529 ΔE 0.047
- Navy Blue #001146 ΔE 0.059
- Space Cadet #2B2D42 ΔE 0.069
- Rich Navy #001219 ΔE 0.076
- Dark Indigo #1F0954 ΔE 0.079
Use #121E36 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.