#02186C
Closest named color: Dark Royal Blue (#02066F). oklch(27.1% 0.146 264.3), rgb(2, 24, 108).
Aa
White text reads best on this color (15.55:1).
About this color
#02186C is a dark, vivid blue. In OKLCH its lightness is 27%, its chroma 0.146 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Royal Blue (#02066F), ΔE 0.027 away. White text reads best on it, at 15.55:1.
| Hue family | Blues |
| Lightness | dark (27%) |
| Chroma | vivid (0.146) |
| Temperature | cool |
| Nearest name | Dark Royal Blue (#02066F) |
| Black text | 1.34:1 |
| White text | 15.55:1 |
Values
| HEX | #02186C |
| RGB | rgb(2, 24, 108) |
| HSL | hsl(228, 96%, 22%) |
| OKLCH | oklch(27.1% 0.146 264.3) |
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 #02186C | 15.55:1 | AAA | Lc -104.5 | Preferred for body text |
| Black text on #02186C | 1.34:1 | Fails | Lc 0.0 | Not readable |
| #02186C text on white | 15.55:1 | AAA | Lc 101.6 | Preferred for body text |
| #02186C text on black | 1.34:1 | 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
#F1F6FF
oklch(97.2% 0.013 262.4)
-
Step 100
100
#E0EAFF
oklch(93.6% 0.03 265.3)
-
Step 200
200
#C7DAFF
oklch(88.6% 0.055 263.7)
-
Step 300
300
#A2C0FF
oklch(80.9% 0.096 264.7)
-
Step 400
400
#709DFF
oklch(70.7% 0.152 264.2)
-
Step 500
500
#4A80FF
oklch(63.1% 0.198 264.2)
-
Step 600
600
#255FFF
oklch(55.6% 0.244 264.3)
-
Step 700
700
#0438FF
oklch(49.1% 0.287 264.3)
-
Step 800
800
#0301EC
oklch(42.7% 0.295 264.3)
-
Step 900
900
#011FB8
oklch(37.6% 0.23 264.3)
-
Step 950
950 (this color)
#02186C
oklch(27.1% 0.146 264.3)
#02186C 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) | #00296E | 0.041 |
| Deuteranopia (no green cones) | #001F6B | 0.015 |
| Tritanopia (no blue cones) | #003140 | 0.111 |
| Achromatopsia (no color) | #242424 | 0.146 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #02186C
#02186C
oklch(27.1% 0.146 264.3)
- #332400
#332400
oklch(27.1% 0.056 85)
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 #02186C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Royal Blue #02066F ΔE 0.027
- Midnight Blue #191970 ΔE 0.027
- Deep Blue #040273 ΔE 0.031
- Darkblue #030764 ΔE 0.034
- Navy #000080 ΔE 0.042
- Dark Blue #00008B ΔE 0.056
- Marine #042E60 ΔE 0.061
- Dark Indigo #1F0954 ΔE 0.065
Use #02186C 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.