#121337
Closest named color: Navy Blue (#001146). oklch(21.1% 0.069 277.5), rgb(18, 19, 55).
Aa
White text reads best on this color (17.88:1).
About this color
#121337 is a very dark, muted blue. In OKLCH its lightness is 21%, its chroma 0.069 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is Navy Blue (#001146), ΔE 0.040 away. White text reads best on it, at 17.88:1.
| Hue family | Blues |
| Lightness | very dark (21%) |
| Chroma | muted (0.069) |
| Temperature | cool |
| Nearest name | Navy Blue (#001146) |
| Black text | 1.17:1 |
| White text | 17.88:1 |
Values
| HEX | #121337 |
| RGB | rgb(18, 19, 55) |
| HSL | hsl(238, 51%, 14%) |
| OKLCH | oklch(21.1% 0.069 277.5) |
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 #121337 | 17.88:1 | AAA | Lc -106.7 | Preferred for body text |
| Black text on #121337 | 1.17:1 | Fails | Lc 0.0 | Not readable |
| #121337 text on white | 17.88:1 | AAA | Lc 104.5 | Preferred for body text |
| #121337 text on black | 1.17:1 | 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
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E6E9FA
oklch(93.7% 0.023 277.9)
-
Step 200
200
#D1D7F8
oklch(88.5% 0.046 277.3)
-
Step 300
300
#B3BCF5
oklch(80.8% 0.081 277.4)
-
Step 400
400
#8D98F1
oklch(70.8% 0.13 277.2)
-
Step 500
500
#737BEC
oklch(63.1% 0.167 277.4)
-
Step 600
600
#5E61DA
oklch(55.6% 0.181 277.7)
-
Step 700
700
#4E4FBD
oklch(49% 0.169 277.8)
-
Step 800
800
#3F4299
oklch(42.7% 0.139 277.2)
-
Step 900
900
#35397A
oklch(37.8% 0.109 277.2)
-
Step 950
950 (this color)
#121337
oklch(21.1% 0.069 277.5)
#121337 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) | #001938 | 0.028 |
| Deuteranopia (no green cones) | #001636 | 0.027 |
| Tritanopia (no blue cones) | #011B22 | 0.059 |
| Achromatopsia (no color) | #171717 | 0.069 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #121337
#121337
oklch(21.1% 0.069 277.5)
- #1E1800
#1E1800
oklch(21% 0.043 96.8)
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 #121337, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Navy Blue #001146 ΔE 0.040
- Rich Black #0D1B2A ΔE 0.041
- Night Blue #040348 ΔE 0.057
- Dark Navy #000435 ΔE 0.061
- Midnight Purple #280137 ΔE 0.061
- Dark Indigo #1F0954 ΔE 0.061
- Dark #1B2431 ΔE 0.064
- Very Dark Purple #2A0134 ΔE 0.065
Use #121337 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.