#02448D
Closest named color: Cobalt (#1E488F). oklch(39.7% 0.135 256.3), rgb(2, 68, 141).
Aa
White text reads best on this color (9.48:1).
About this color
#02448D is a dark, moderately saturated blue. In OKLCH its lightness is 40%, its chroma 0.135 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.021 away. White text reads best on it, at 9.48:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.135) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.21:1 |
| White text | 9.48:1 |
Values
| HEX | #02448D |
| RGB | rgb(2, 68, 141) |
| HSL | hsl(212, 97%, 28%) |
| OKLCH | oklch(39.7% 0.135 256.3) |
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 #02448D | 9.48:1 | AAA | Lc -95.6 | Preferred for body text |
| Black text on #02448D | 2.21:1 | Fails | Lc 12.7 | Not readable |
| #02448D text on white | 9.48:1 | AAA | Lc 91.3 | Preferred for body text |
| #02448D text on black | 2.21:1 | Fails | Lc -11.1 | 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 900.
-
Step 50
50
#F0F6FF
oklch(97.1% 0.014 258.3)
-
Step 100
100
#DEEBFE
oklch(93.6% 0.029 257.8)
-
Step 200
200
#C2DBFF
oklch(88.5% 0.057 257.5)
-
Step 300
300
#98C3FF
oklch(80.9% 0.097 256.8)
-
Step 400
400
#5CA1FF
oklch(70.6% 0.155 256.6)
-
Step 500
500
#2086FF
oklch(63.1% 0.201 256.3)
-
Step 600
600
#006FE0
oklch(55.6% 0.192 256.3)
-
Step 700
700
#005DBE
oklch(49.2% 0.17 256.3)
-
Step 800
800
#004C9D
oklch(42.8% 0.147 256.2)
-
Step 900
900 (this color)
#02448D
oklch(39.7% 0.135 256.3)
-
Step 950
950
#04254F
oklch(27% 0.086 256.5)
#02448D 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) | #134C90 | 0.026 |
| Deuteranopia (no green cones) | #00408C | 0.011 |
| Tritanopia (no blue cones) | #005662 | 0.101 |
| Achromatopsia (no color) | #464646 | 0.135 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #02448D
#02448D
oklch(39.7% 0.135 256.3)
- #603F00
#603F00
oklch(39.6% 0.083 75.5)
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 #02448D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.021
- Twilight Blue #0A437A ΔE 0.032
- Light Navy #155084 ΔE 0.042
- Dusk Blue #26538D ΔE 0.052
- Deep Sea Blue #015482 ΔE 0.053
- Sapphire #2138AB ΔE 0.059
- Marine Blue #01386A ΔE 0.067
- Blueberry #464196 ΔE 0.067
Use #02448D 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.