#02156E
Closest named color: Dark Royal Blue (#02066F). oklch(26.9% 0.151 264.6), rgb(2, 21, 110).
Aa
White text reads best on this color (15.73:1).
About this color
#02156E is a dark, vivid blue. In OKLCH its lightness is 27%, its chroma 0.151 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Royal Blue (#02066F), ΔE 0.021 away. White text reads best on it, at 15.73:1.
| Hue family | Blues |
| Lightness | dark (27%) |
| Chroma | vivid (0.151) |
| Temperature | cool |
| Nearest name | Dark Royal Blue (#02066F) |
| Black text | 1.33:1 |
| White text | 15.73:1 |
Values
| HEX | #02156E |
| RGB | rgb(2, 21, 110) |
| HSL | hsl(229, 96%, 22%) |
| OKLCH | oklch(26.9% 0.151 264.6) |
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 #02156E | 15.73:1 | AAA | Lc -104.5 | Preferred for body text |
| Black text on #02156E | 1.33:1 | Fails | Lc 0.0 | Not readable |
| #02156E text on white | 15.73:1 | AAA | Lc 101.7 | Preferred for body text |
| #02156E text on black | 1.33:1 | 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
#C7D9FF
oklch(88.4% 0.056 265.2)
-
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
#4C80FF
oklch(63.2% 0.197 264.6)
-
Step 600
600
#275FFF
oklch(55.7% 0.244 264.5)
-
Step 700
700
#0937FF
oklch(49.1% 0.287 264.5)
-
Step 800
800
#0600EC
oklch(42.7% 0.295 264.5)
-
Step 900
900
#0319BD
oklch(37.7% 0.239 264.6)
-
Step 950
950 (this color)
#02156E
oklch(26.9% 0.151 264.6)
#02156E 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) | #002871 | 0.043 |
| Deuteranopia (no green cones) | #001D6C | 0.016 |
| Tritanopia (no blue cones) | #003041 | 0.113 |
| Achromatopsia (no color) | #232323 | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #02156E
#02156E
oklch(26.9% 0.151 264.6)
- #332300
#332300
oklch(26.8% 0.055 83)
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 #02156E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Royal Blue #02066F ΔE 0.021
- Deep Blue #040273 ΔE 0.025
- Midnight Blue #191970 ΔE 0.029
- Darkblue #030764 ΔE 0.032
- Navy #000080 ΔE 0.037
- Dark Blue #00008B ΔE 0.052
- Dark Indigo #1F0954 ΔE 0.066
- Marine #042E60 ΔE 0.067
Use #02156E 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.