#121D41
Closest named color: Oxford Blue (#1B263B). oklch(24.4% 0.07 268.1), rgb(18, 29, 65).
Aa
White text reads best on this color (16.43:1).
About this color
#121D41 is a very dark, muted blue. In OKLCH its lightness is 24%, its chroma 0.070 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.038 away. White text reads best on it, at 16.43:1.
| Hue family | Blues |
| Lightness | very dark (24%) |
| Chroma | muted (0.070) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.27:1 |
| White text | 16.43:1 |
Values
| HEX | #121D41 |
| RGB | rgb(18, 29, 65) |
| HSL | hsl(226, 57%, 16%) |
| OKLCH | oklch(24.4% 0.07 268.1) |
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 #121D41 | 16.43:1 | AAA | Lc -105.7 | Preferred for body text |
| Black text on #121D41 | 1.27:1 | Fails | Lc 0.0 | Not readable |
| #121D41 text on white | 16.43:1 | AAA | Lc 103.2 | Preferred for body text |
| #121D41 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
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E3EAFB
oklch(93.7% 0.024 267.9)
-
Step 200
200
#CCD9F9
oklch(88.6% 0.046 267.9)
-
Step 300
300
#AABFF7
oklch(80.9% 0.083 268.6)
-
Step 400
400
#7D9CF3
oklch(70.6% 0.132 268.1)
-
Step 500
500
#5E81EF
oklch(63.2% 0.169 268)
-
Step 600
600
#4667DD
oklch(55.5% 0.184 268.1)
-
Step 700
700
#3855C0
oklch(49.1% 0.171 268)
-
Step 800
800
#2E469B
oklch(42.6% 0.142 268)
-
Step 900
900
#293C7B
oklch(37.7% 0.11 268.2)
-
Step 950
950 (this color)
#121D41
oklch(24.4% 0.07 268.1)
#121D41 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) | #0A2142 | 0.014 |
| Deuteranopia (no green cones) | #021D40 | 0.019 |
| Tritanopia (no blue cones) | #00252B | 0.059 |
| Achromatopsia (no color) | #1F1F1F | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #121D41
#121D41
oklch(24.4% 0.07 268.1)
- #2A1E00
#2A1E00
oklch(24.3% 0.05 87.2)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes and gradients that use #121D41
These curated palettes and gradients contain exactly #121D41. Open one to see the full color scheme around it.
Palettes
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.038
- Dark #1B2431 ΔE 0.045
- Rich Black #0D1B2A ΔE 0.045
- Navy Blue #001146 ΔE 0.047
- Dark Indigo #1F0954 ΔE 0.059
- Jet #212529 ΔE 0.064
- Space Cadet #2B2D42 ΔE 0.070
- Marine #042E60 ΔE 0.072
Use #121D41 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.