#02153D
Closest named color: Navy Blue (#001146). oklch(21.1% 0.082 261.1), rgb(2, 21, 61).
Aa
White text reads best on this color (17.83:1).
About this color
#02153D is a very dark, moderately saturated blue. In OKLCH its lightness is 21%, its chroma 0.082 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Navy Blue (#001146), ΔE 0.021 away. White text reads best on it, at 17.83:1.
| Hue family | Blues |
| Lightness | very dark (21%) |
| Chroma | moderately saturated (0.082) |
| Temperature | cool |
| Nearest name | Navy Blue (#001146) |
| Black text | 1.17:1 |
| White text | 17.83:1 |
Values
| HEX | #02153D |
| RGB | rgb(2, 21, 61) |
| HSL | hsl(221, 94%, 12%) |
| OKLCH | oklch(21.1% 0.082 261.1) |
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 #02153D | 17.83:1 | AAA | Lc -106.6 | Preferred for body text |
| Black text on #02153D | 1.17:1 | Fails | Lc 0.0 | Not readable |
| #02153D text on white | 17.83:1 | AAA | Lc 104.3 | Preferred for body text |
| #02153D 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
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E0EBFD
oklch(93.7% 0.027 260.3)
-
Step 200
200
#C5DAFD
oklch(88.4% 0.054 260.6)
-
Step 300
300
#9EC1FF
oklch(80.8% 0.096 261.6)
-
Step 400
400
#689FFF
oklch(70.7% 0.153 260.8)
-
Step 500
500
#3E83FF
oklch(63.2% 0.198 261)
-
Step 600
600
#1C68EE
oklch(55.6% 0.215 261.1)
-
Step 700
700
#0E55CF
oklch(49% 0.2 261.1)
-
Step 800
800
#1047A7
oklch(42.7% 0.165 261)
-
Step 900
900
#153D85
oklch(37.8% 0.129 261.1)
-
Step 950
950 (this color)
#02153D
oklch(21.1% 0.082 261.1)
#02153D 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) | #001A3E | 0.015 |
| Deuteranopia (no green cones) | #00153C | 0.004 |
| Tritanopia (no blue cones) | #001F26 | 0.062 |
| Achromatopsia (no color) | #181818 | 0.082 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #02153D
#02153D
oklch(21.1% 0.082 261.1)
- #231600
#231600
oklch(21.2% 0.044 80.4)
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 #02153D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Navy Blue #001146 ΔE 0.021
- Night Blue #040348 ΔE 0.045
- Rich Black #0D1B2A ΔE 0.048
- Dark Navy #000435 ΔE 0.053
- Very Dark Blue #000133 ΔE 0.065
- Dark Indigo #1F0954 ΔE 0.065
- Dark Navy Blue #00022E ΔE 0.068
- Midnight #03012D ΔE 0.070
Use #02153D 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.