#004596
Closest named color: Cobalt (#1E488F). oklch(40.6% 0.146 257.4), rgb(0, 69, 150).
Aa
White text reads best on this color (9.16:1).
About this color
#004596 is a dark, vivid blue. In OKLCH its lightness is 41%, its chroma 0.146 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.022 away. White text reads best on it, at 9.16:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | vivid (0.146) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.29:1 |
| White text | 9.16:1 |
Values
| HEX | #004596 |
| RGB | rgb(0, 69, 150) |
| HSL | hsl(212, 100%, 29%) |
| OKLCH | oklch(40.6% 0.146 257.4) |
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 #004596 | 9.16:1 | AAA | Lc -94.8 | Preferred for body text |
| Black text on #004596 | 2.29:1 | Fails | Lc 13.6 | Not readable |
| #004596 text on white | 9.16:1 | AAA | Lc 90.3 | Preferred for body text |
| #004596 text on black | 2.29:1 | Fails | Lc -12.0 | 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 800.
-
Step 50
50
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E0EBFB
oklch(93.7% 0.025 257.6)
-
Step 200
200
#C6DBF9
oklch(88.5% 0.047 257.3)
-
Step 300
300
#9EC3F8
oklch(80.9% 0.085 257.3)
-
Step 400
400
#67A2F5
oklch(70.8% 0.137 257.1)
-
Step 500
500
#3B87F1
oklch(63% 0.176 257.5)
-
Step 600
600
#126EDF
oklch(55.5% 0.19 257.4)
-
Step 700
700
#005BC2
oklch(49% 0.177 257.5)
-
Step 800
800 (this color)
#004596
oklch(40.6% 0.146 257.4)
-
Step 900
900
#13407D
oklch(37.8% 0.114 257.4)
-
Step 950
950
#0D2649
oklch(27.1% 0.072 257.4)
#004596 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) | #014E99 | 0.025 |
| Deuteranopia (no green cones) | #004294 | 0.009 |
| Tritanopia (no blue cones) | #005966 | 0.110 |
| Achromatopsia (no color) | #484848 | 0.146 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #004596
#004596
oklch(40.6% 0.146 257.4)
- #624200
#624200
oklch(40.5% 0.085 77.5)
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 #004596, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.022
- Twilight Blue #0A437A ΔE 0.047
- Light Navy #155084 ΔE 0.048
- Sapphire #2138AB ΔE 0.048
- Dusk Blue #26538D ΔE 0.052
- Deep Sea Blue #015482 ΔE 0.059
- Blueberry #464196 ΔE 0.064
- Dark Slate Blue #483D8B ΔE 0.071
Use #004596 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.