#121741
Closest named color: Navy Blue (#001146). oklch(22.9% 0.079 273.3), rgb(18, 23, 65).
Aa
White text reads best on this color (17.14:1).
About this color
#121741 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 0.034 away. White text reads best on it, at 17.14:1.
| Hue family | Blues |
| Lightness | very dark (23%) |
| Chroma | moderately saturated (0.079) |
| Temperature | cool |
| Nearest name | Navy Blue (#001146) |
| Black text | 1.22:1 |
| White text | 17.14:1 |
Values
| HEX | #121741 |
| RGB | rgb(18, 23, 65) |
| HSL | hsl(234, 57%, 16%) |
| OKLCH | oklch(22.9% 0.079 273.3) |
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 #121741 | 17.14:1 | AAA | Lc -106.2 | Preferred for body text |
| Black text on #121741 | 1.22:1 | Fails | Lc 0.0 | Not readable |
| #121741 text on white | 17.14:1 | AAA | Lc 103.8 | Preferred for body text |
| #121741 text on black | 1.22:1 | 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
#E4E9FD
oklch(93.6% 0.028 274.7)
-
Step 200
200
#CED8FC
oklch(88.6% 0.051 273.1)
-
Step 300
300
#ADBDFE
oklch(81% 0.094 273.5)
-
Step 400
400
#8398FD
oklch(70.8% 0.149 273.2)
-
Step 500
500
#677AFB
oklch(63.1% 0.191 273.3)
-
Step 600
600
#515FEA
oklch(55.6% 0.208 273.2)
-
Step 700
700
#434DCC
oklch(49.2% 0.194 273.4)
-
Step 800
800
#3640A5
oklch(42.7% 0.161 273.2)
-
Step 900
900
#2E3882
oklch(37.7% 0.124 273.1)
-
Step 950
950 (this color)
#121741
oklch(22.9% 0.079 273.3)
#121741 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) | #001E42 | 0.027 |
| Deuteranopia (no green cones) | #001940 | 0.023 |
| Tritanopia (no blue cones) | #002129 | 0.066 |
| Achromatopsia (no color) | #1B1B1B | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #121741
#121741
oklch(22.9% 0.079 273.3)
- #241C00
#241C00
oklch(22.9% 0.047 94)
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 #121741, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Navy Blue #001146 ΔE 0.034
- Dark Indigo #1F0954 ΔE 0.049
- Rich Black #0D1B2A ΔE 0.049
- Oxford Blue #1B263B ΔE 0.055
- Night Blue #040348 ΔE 0.057
- Dark #1B2431 ΔE 0.060
- Midnight Purple #280137 ΔE 0.069
- Dark Navy #000435 ΔE 0.073
Use #121741 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.