#121B49
Closest named color: Navy Blue (#001146). oklch(24.6% 0.086 270.4), rgb(18, 27, 73).
Aa
White text reads best on this color (16.42:1).
About this color
#121B49 is a very dark, moderately saturated blue. In OKLCH its lightness is 25%, its chroma 0.086 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Navy Blue (#001146), ΔE 0.041 away. White text reads best on it, at 16.42:1.
| Hue family | Blues |
| Lightness | very dark (25%) |
| Chroma | moderately saturated (0.086) |
| Temperature | cool |
| Nearest name | Navy Blue (#001146) |
| Black text | 1.27:1 |
| White text | 16.42:1 |
Values
| HEX | #121B49 |
| RGB | rgb(18, 27, 73) |
| HSL | hsl(230, 60%, 18%) |
| OKLCH | oklch(24.6% 0.086 270.4) |
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 #121B49 | 16.42:1 | AAA | Lc -105.7 | Preferred for body text |
| Black text on #121B49 | 1.27:1 | Fails | Lc 0.0 | Not readable |
| #121B49 text on white | 16.42:1 | AAA | Lc 103.1 | Preferred for body text |
| #121B49 text on black | 1.27:1 | 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
#F2F5FF
oklch(97.1% 0.014 272.7)
-
Step 100
100
#E2E9FE
oklch(93.5% 0.029 271.1)
-
Step 200
200
#CBD8FF
oklch(88.5% 0.056 270.7)
-
Step 300
300
#A9BEFF
oklch(80.9% 0.095 270.4)
-
Step 400
400
#7D99FF
oklch(70.7% 0.152 270.5)
-
Step 500
500
#5E7BFF
oklch(63.1% 0.198 270.4)
-
Step 600
600
#465DF5
oklch(55.6% 0.227 270.4)
-
Step 700
700
#394BD5
oklch(49.1% 0.21 270.5)
-
Step 800
800
#2E3FAC
oklch(42.7% 0.174 270.3)
-
Step 900
900
#283788
oklch(37.6% 0.136 270.5)
-
Step 950
950 (this color)
#121B49
oklch(24.6% 0.086 270.4)
#121B49 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) | #00224B | 0.025 |
| Deuteranopia (no green cones) | #001D48 | 0.020 |
| Tritanopia (no blue cones) | #00262E | 0.071 |
| Achromatopsia (no color) | #1F1F1F | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #121B49
#121B49
oklch(24.6% 0.086 270.4)
- #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 #121B49, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Navy Blue #001146 ΔE 0.041
- Dark Indigo #1F0954 ΔE 0.046
- Oxford Blue #1B263B ΔE 0.050
- Dark #1B2431 ΔE 0.061
- Rich Black #0D1B2A ΔE 0.061
- Night Blue #040348 ΔE 0.065
- Darkblue #030764 ΔE 0.066
- Marine #042E60 ΔE 0.066
Use #121B49 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.