#09143B
Closest named color: Navy Blue (#001146). oklch(21% 0.077 267.3), rgb(9, 20, 59).
Aa
White text reads best on this color (17.87:1).
About this color
#09143B is a very dark, moderately saturated blue. In OKLCH its lightness is 21%, its chroma 0.077 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Navy Blue (#001146), ΔE 0.026 away. White text reads best on it, at 17.87:1.
| Hue family | Blues |
| Lightness | very dark (21%) |
| Chroma | moderately saturated (0.077) |
| Temperature | cool |
| Nearest name | Navy Blue (#001146) |
| Black text | 1.17:1 |
| White text | 17.87:1 |
Values
| HEX | #09143B |
| RGB | rgb(9, 20, 59) |
| HSL | hsl(227, 74%, 13%) |
| OKLCH | oklch(21% 0.077 267.3) |
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 #09143B | 17.87:1 | AAA | Lc -106.7 | Preferred for body text |
| Black text on #09143B | 1.17:1 | Fails | Lc 0.0 | Not readable |
| #09143B text on white | 17.87:1 | AAA | Lc 104.4 | Preferred for body text |
| #09143B 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
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E2EAFC
oklch(93.6% 0.026 266.6)
-
Step 200
200
#CAD9FC
oklch(88.5% 0.051 267)
-
Step 300
300
#A7BFFC
oklch(80.9% 0.091 267.7)
-
Step 400
400
#789CFB
oklch(70.8% 0.145 267)
-
Step 500
500
#587FF9
oklch(63.1% 0.187 267.5)
-
Step 600
600
#4065E8
oklch(55.7% 0.202 267.4)
-
Step 700
700
#3253C9
oklch(49.2% 0.187 267.1)
-
Step 800
800
#2A44A3
oklch(42.7% 0.157 267.6)
-
Step 900
900
#253B81
oklch(37.7% 0.121 267.2)
-
Step 950
950 (this color)
#09143B
oklch(21% 0.077 267.3)
#09143B 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) | #001A3C | 0.020 |
| Deuteranopia (no green cones) | #00153A | 0.013 |
| Tritanopia (no blue cones) | #001E25 | 0.061 |
| Achromatopsia (no color) | #171717 | 0.077 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #09143B
#09143B
oklch(21% 0.077 267.3)
- #211700
#211700
oklch(21.1% 0.043 87.4)
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 #09143B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Navy Blue #001146 ΔE 0.026
- Rich Black #0D1B2A ΔE 0.044
- Night Blue #040348 ΔE 0.047
- Dark Navy #000435 ΔE 0.054
- Dark Indigo #1F0954 ΔE 0.062
- Very Dark Blue #000133 ΔE 0.066
- Oxford Blue #1B263B ΔE 0.068
- Dark #1B2431 ΔE 0.069
Use #09143B 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.