#0047A1
Closest named color: Cobalt (#1E488F). oklch(42% 0.159 258.5), rgb(0, 71, 161).
Aa
White text reads best on this color (8.69:1).
About this color
#0047A1 is a dark, vivid blue. In OKLCH its lightness is 42%, its chroma 0.159 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.033 away. White text reads best on it, at 8.69:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | vivid (0.159) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.41:1 |
| White text | 8.69:1 |
Values
| HEX | #0047A1 |
| RGB | rgb(0, 71, 161) |
| HSL | hsl(214, 100%, 32%) |
| OKLCH | oklch(42% 0.159 258.5) |
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 #0047A1 | 8.69:1 | AAA | Lc -93.6 | Preferred for body text |
| Black text on #0047A1 | 2.41:1 | Fails | Lc 15.0 | Dividers and decoration only |
| #0047A1 text on white | 8.69:1 | AAA | Lc 89.0 | Fine for body text |
| #0047A1 text on black | 2.41:1 | Fails | Lc -13.2 | 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 800.
-
Step 50
50
#F0F6FE
oklch(97.1% 0.012 255.5)
-
Step 100
100
#DFEBFC
oklch(93.6% 0.026 257)
-
Step 200
200
#C5DBFC
oklch(88.6% 0.051 258.4)
-
Step 300
300
#9CC2FD
oklch(80.8% 0.094 259)
-
Step 400
400
#64A0FC
oklch(70.6% 0.149 258.7)
-
Step 500
500
#3785F9
oklch(63% 0.19 258.6)
-
Step 600
600
#076BE8
oklch(55.5% 0.206 258.5)
-
Step 700
700
#0059C7
oklch(49% 0.186 258.6)
-
Step 800
800 (this color)
#0047A1
oklch(42% 0.159 258.5)
-
Step 900
900
#103E82
oklch(37.6% 0.125 258.9)
-
Step 950
950
#0B254C
oklch(27% 0.079 258.6)
#0047A1 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) | #0052A4 | 0.030 |
| Deuteranopia (no green cones) | #00459F | 0.006 |
| Tritanopia (no blue cones) | #005E6D | 0.120 |
| Achromatopsia (no color) | #4B4B4B | 0.159 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0047A1
#0047A1
oklch(42% 0.159 258.5)
- #664600
#664600
oklch(41.9% 0.087 78.9)
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 #0047A1, closest first.
No curated palette has a color within ΔE 0.04 of #0047A1.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.033
- Sapphire #2138AB ΔE 0.040
- Dusk Blue #26538D ΔE 0.056
- Light Navy #155084 ΔE 0.058
- Blueberry #464196 ΔE 0.064
- Blue Blue #2242C7 ΔE 0.065
- Twilight Blue #0A437A ΔE 0.065
- Deep Sea Blue #015482 ΔE 0.067
Use #0047A1 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.