#121842
Closest named color: Navy Blue (#001146). oklch(23.3% 0.079 272.5), rgb(18, 24, 66).
Aa
White text reads best on this color (17.00:1).
About this color
#121842 is a very dark, moderately saturated blue. In OKLCH its lightness is 23%, its chroma 0.079 and its hue 273°. 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 17.00:1.
| Hue family | Blues |
| Lightness | very dark (23%) |
| Chroma | moderately saturated (0.079) |
| Temperature | cool |
| Nearest name | Navy Blue (#001146) |
| Black text | 1.23:1 |
| White text | 17.00:1 |
Values
| HEX | #121842 |
| RGB | rgb(18, 24, 66) |
| HSL | hsl(233, 57%, 16%) |
| OKLCH | oklch(23.3% 0.079 272.5) |
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 #121842 | 17.00:1 | AAA | Lc -106.1 | Preferred for body text |
| Black text on #121842 | 1.23:1 | Fails | Lc 0.0 | Not readable |
| #121842 text on white | 17.00:1 | AAA | Lc 103.7 | Preferred for body text |
| #121842 text on black | 1.23:1 | 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
#E3E9FD
oklch(93.5% 0.028 272.5)
-
Step 200
200
#CDD8FD
oklch(88.6% 0.052 272.2)
-
Step 300
300
#ACBDFE
oklch(80.9% 0.094 272.8)
-
Step 400
400
#8198FD
oklch(70.6% 0.15 272.4)
-
Step 500
500
#657AFB
oklch(63% 0.192 272.7)
-
Step 600
600
#4F5FEB
oklch(55.6% 0.209 272.6)
-
Step 700
700
#414DCC
oklch(49.1% 0.194 272.8)
-
Step 800
800
#3540A5
oklch(42.6% 0.161 272.8)
-
Step 900
900
#2D3883
oklch(37.7% 0.126 272.6)
-
Step 950
950 (this color)
#121842
oklch(23.3% 0.079 272.5)
#121842 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) | #001E43 | 0.025 |
| Deuteranopia (no green cones) | #001A41 | 0.022 |
| Tritanopia (no blue cones) | #00222A | 0.066 |
| Achromatopsia (no color) | #1C1C1C | 0.080 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #121842
#121842
oklch(23.3% 0.079 272.5)
- #251D00
#251D00
oklch(23.3% 0.048 94.4)
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 #121842, 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 0.049
- Rich Black #0D1B2A ΔE 0.050
- Oxford Blue #1B263B ΔE 0.053
- Dark #1B2431 ΔE 0.059
- Night Blue #040348 ΔE 0.059
- Midnight Purple #280137 ΔE 0.071
- Darkblue #030764 ΔE 0.073
Use #121842 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.