#11183E
Closest named color: Navy Blue (#001146). oklch(22.8% 0.073 271.6), rgb(17, 24, 62).
Aa
White text reads best on this color (17.15:1).
About this color
#11183E is a very dark, moderately saturated blue. In OKLCH its lightness is 23%, its chroma 0.073 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Navy Blue (#001146), ΔE 0.037 away. White text reads best on it, at 17.15:1.
| Hue family | Blues |
| Lightness | very dark (23%) |
| Chroma | moderately saturated (0.073) |
| Temperature | cool |
| Nearest name | Navy Blue (#001146) |
| Black text | 1.22:1 |
| White text | 17.15:1 |
Values
| HEX | #11183E |
| RGB | rgb(17, 24, 62) |
| HSL | hsl(231, 57%, 15%) |
| OKLCH | oklch(22.8% 0.073 271.6) |
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 #11183E | 17.15:1 | AAA | Lc -106.2 | Preferred for body text |
| Black text on #11183E | 1.22:1 | Fails | Lc 0.0 | Not readable |
| #11183E text on white | 17.15:1 | AAA | Lc 103.9 | Preferred for body text |
| #11183E 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
#E4E9FB
oklch(93.6% 0.025 273.5)
-
Step 200
200
#CDD8FA
oklch(88.5% 0.048 271.2)
-
Step 300
300
#ACBEF9
oklch(80.9% 0.086 271.2)
-
Step 400
400
#829AF6
oklch(70.7% 0.137 271.4)
-
Step 500
500
#657EF3
oklch(63.2% 0.176 271.5)
-
Step 600
600
#4E63E1
oklch(55.5% 0.192 271.5)
-
Step 700
700
#4051C4
oklch(49.1% 0.179 271.7)
-
Step 800
800
#34439E
oklch(42.6% 0.148 271.6)
-
Step 900
900
#2D3A7E
oklch(37.7% 0.116 271.6)
-
Step 950
950 (this color)
#11183E
oklch(22.8% 0.073 271.6)
#11183E 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) | #021D3F | 0.021 |
| Deuteranopia (no green cones) | #00193D | 0.022 |
| Tritanopia (no blue cones) | #002128 | 0.061 |
| Achromatopsia (no color) | #1B1B1B | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #11183E
#11183E
oklch(22.8% 0.073 271.6)
- #241B00
#241B00
oklch(22.7% 0.046 91.6)
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 #11183E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Navy Blue #001146 ΔE 0.037
- Rich Black #0D1B2A ΔE 0.043
- Oxford Blue #1B263B ΔE 0.052
- Dark #1B2431 ΔE 0.055
- Dark Indigo #1F0954 ΔE 0.055
- Night Blue #040348 ΔE 0.060
- Midnight Purple #280137 ΔE 0.071
- Jet #212529 ΔE 0.073
Use #11183E 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.