#121845
Closest named color: Navy Blue (#001146). oklch(23.5% 0.084 272.4), rgb(18, 24, 69).
Aa
White text reads best on this color (16.90:1).
About this color
#121845 is a very dark, moderately saturated blue. In OKLCH its lightness is 24%, its chroma 0.084 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Navy Blue (#001146), ΔE 0.035 away. White text reads best on it, at 16.90:1.
| Hue family | Blues |
| Lightness | very dark (24%) |
| Chroma | moderately saturated (0.084) |
| Temperature | cool |
| Nearest name | Navy Blue (#001146) |
| Black text | 1.24:1 |
| White text | 16.90:1 |
Values
| HEX | #121845 |
| RGB | rgb(18, 24, 69) |
| HSL | hsl(233, 59%, 17%) |
| OKLCH | oklch(23.5% 0.084 272.4) |
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 #121845 | 16.90:1 | AAA | Lc -106.0 | Preferred for body text |
| Black text on #121845 | 1.24:1 | Fails | Lc 0.0 | Not readable |
| #121845 text on white | 16.90:1 | AAA | Lc 103.6 | Preferred for body text |
| #121845 text on black | 1.24:1 | 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
#E3E9FE
oklch(93.6% 0.029 273.1)
-
Step 200
200
#CCD8FF
oklch(88.6% 0.055 271.8)
-
Step 300
300
#ABBDFF
oklch(80.9% 0.096 272.3)
-
Step 400
400
#8198FF
oklch(70.7% 0.153 272.5)
-
Step 500
500
#647AFF
oklch(63.2% 0.198 272.4)
-
Step 600
600
#4D5CF2
oklch(55.6% 0.222 272.4)
-
Step 700
700
#3F4BD3
oklch(49.2% 0.206 272.3)
-
Step 800
800
#343EAA
oklch(42.7% 0.171 272.7)
-
Step 900
900
#2C3787
oklch(37.8% 0.133 272.4)
-
Step 950
950 (this color)
#121845
oklch(23.5% 0.084 272.4)
#121845 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) | #001F47 | 0.026 |
| Deuteranopia (no green cones) | #001B44 | 0.022 |
| Tritanopia (no blue cones) | #00232B | 0.070 |
| Achromatopsia (no color) | #1D1D1D | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #121845
#121845
oklch(23.5% 0.084 272.4)
- #261D00
#261D00
oklch(23.5% 0.048 92.4)
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 #121845, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Navy Blue #001146 ΔE 0.035
- Dark Indigo #1F0954 ΔE 0.045
- Oxford Blue #1B263B ΔE 0.055
- Rich Black #0D1B2A ΔE 0.055
- Night Blue #040348 ΔE 0.058
- Dark #1B2431 ΔE 0.062
- Darkblue #030764 ΔE 0.068
- Midnight Purple #280137 ΔE 0.073
Use #121845 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.