#121E35
Closest named color: Rich Black (#0D1B2A). oklch(23.7% 0.048 262.4), rgb(18, 30, 53).
Aa
White text reads best on this color (16.62:1).
About this color
#121E35 is a very dark, muted blue. In OKLCH its lightness is 24%, its chroma 0.048 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.024 away. White text reads best on it, at 16.62:1.
| Hue family | Blues |
| Lightness | very dark (24%) |
| Chroma | muted (0.048) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.26:1 |
| White text | 16.62:1 |
Values
| HEX | #121E35 |
| RGB | rgb(18, 30, 53) |
| HSL | hsl(219, 49%, 14%) |
| OKLCH | oklch(23.7% 0.048 262.4) |
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 #121E35 | 16.62:1 | AAA | Lc -105.9 | Preferred for body text |
| Black text on #121E35 | 1.26:1 | Fails | Lc 0.0 | Not readable |
| #121E35 text on white | 16.62:1 | AAA | Lc 103.5 | Preferred for body text |
| #121E35 text on black | 1.26:1 | 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
#F3F6FB
oklch(97.2% 0.007 260.7)
-
Step 100
100
#E4EAF5
oklch(93.6% 0.016 262.8)
-
Step 200
200
#CEDAEF
oklch(88.6% 0.032 261.7)
-
Step 300
300
#ADC1E6
oklch(80.8% 0.057 262.7)
-
Step 400
400
#82A1D9
oklch(70.7% 0.09 261.9)
-
Step 500
500
#6388CF
oklch(63% 0.115 262.6)
-
Step 600
600
#4A71BC
oklch(55.6% 0.125 262.3)
-
Step 700
700
#3B5EA2
oklch(49% 0.117 262.4)
-
Step 800
800
#314D84
oklch(42.7% 0.098 262.6)
-
Step 900
900
#2B4169
oklch(37.7% 0.074 261.6)
-
Step 950
950 (this color)
#121E35
oklch(23.7% 0.048 262.4)
#121E35 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) | #152036 | 0.009 |
| Deuteranopia (no green cones) | #101D35 | 0.005 |
| Tritanopia (no blue cones) | #012326 | 0.043 |
| Achromatopsia (no color) | #1E1E1E | 0.048 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #121E35
#121E35
oklch(23.7% 0.048 262.4)
- #2A1C01
#2A1C01
oklch(23.8% 0.048 81.5)
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 #121E35, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.024
- Dark #1B2431 ΔE 0.029
- Oxford Blue #1B263B ΔE 0.033
- Jet #212529 ΔE 0.046
- Navy Blue #001146 ΔE 0.061
- Space Cadet #2B2D42 ΔE 0.070
- Rich Navy #001219 ΔE 0.075
- Dark Indigo #1F0954 ΔE 0.080
Use #121E35 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.