#121C46
Closest named color: Navy Blue (#001146). oklch(24.6% 0.08 269.6), rgb(18, 28, 70).
Aa
White text reads best on this color (16.40:1).
About this color
#121C46 is a very dark, moderately saturated blue. In OKLCH its lightness is 25%, its chroma 0.080 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Navy Blue (#001146), ΔE 0.043 away. White text reads best on it, at 16.40:1.
| Hue family | Blues |
| Lightness | very dark (25%) |
| Chroma | moderately saturated (0.080) |
| Temperature | cool |
| Nearest name | Navy Blue (#001146) |
| Black text | 1.28:1 |
| White text | 16.40:1 |
Values
| HEX | #121C46 |
| RGB | rgb(18, 28, 70) |
| HSL | hsl(228, 59%, 17%) |
| OKLCH | oklch(24.6% 0.08 269.6) |
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 #121C46 | 16.40:1 | AAA | Lc -105.7 | Preferred for body text |
| Black text on #121C46 | 1.28:1 | Fails | Lc 0.0 | Not readable |
| #121C46 text on white | 16.40:1 | AAA | Lc 103.2 | Preferred for body text |
| #121C46 text on black | 1.28:1 | 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
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E2EAFD
oklch(93.7% 0.027 267.5)
-
Step 200
200
#CBD8FD
oklch(88.4% 0.053 270)
-
Step 300
300
#A8BEFE
oklch(80.8% 0.094 269.6)
-
Step 400
400
#7B9AFE
oklch(70.7% 0.151 269.3)
-
Step 500
500
#5D7DFC
oklch(63.2% 0.192 269.6)
-
Step 600
600
#4661EC
oklch(55.6% 0.211 269.8)
-
Step 700
700
#384FCD
oklch(49% 0.196 269.6)
-
Step 800
800
#2E42A6
oklch(42.7% 0.162 269.6)
-
Step 900
900
#283983
oklch(37.6% 0.126 269.6)
-
Step 950
950 (this color)
#121C46
oklch(24.6% 0.08 269.6)
#121C46 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) | #022247 | 0.022 |
| Deuteranopia (no green cones) | #001D45 | 0.020 |
| Tritanopia (no blue cones) | #00262D | 0.067 |
| Achromatopsia (no color) | #1F1F1F | 0.080 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #121C46
#121C46
oklch(24.6% 0.08 269.6)
- #2A1F00
#2A1F00
oklch(24.6% 0.05 89.5)
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 #121C46, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Navy Blue #001146 ΔE 0.043
- Oxford Blue #1B263B ΔE 0.045
- Dark Indigo #1F0954 ΔE 0.051
- Dark #1B2431 ΔE 0.054
- Rich Black #0D1B2A ΔE 0.055
- Marine #042E60 ΔE 0.068
- Night Blue #040348 ΔE 0.068
- Darkblue #030764 ΔE 0.072
Use #121C46 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.