#004593
Closest named color: Cobalt (#1E488F). oklch(40.3% 0.142 256.8), rgb(0, 69, 147).
Aa
White text reads best on this color (9.24:1).
About this color
#004593 is a dark, vivid blue. In OKLCH its lightness is 40%, its chroma 0.142 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.020 away. White text reads best on it, at 9.24:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | vivid (0.142) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.27:1 |
| White text | 9.24:1 |
Values
| HEX | #004593 |
| RGB | rgb(0, 69, 147) |
| HSL | hsl(212, 100%, 29%) |
| OKLCH | oklch(40.3% 0.142 256.8) |
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 #004593 | 9.24:1 | AAA | Lc -95.0 | Preferred for body text |
| Black text on #004593 | 2.27:1 | Fails | Lc 13.4 | Not readable |
| #004593 text on white | 9.24:1 | AAA | Lc 90.6 | Preferred for body text |
| #004593 text on black | 2.27:1 | Fails | Lc -11.7 | 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
#E0EBFA
oklch(93.6% 0.024 256.1)
-
Step 200
200
#C6DBF8
oklch(88.5% 0.046 256.5)
-
Step 300
300
#9EC3F6
oklch(80.9% 0.083 256.5)
-
Step 400
400
#68A2F2
oklch(70.7% 0.133 256.7)
-
Step 500
500
#3C88EE
oklch(63.1% 0.171 256.9)
-
Step 600
600
#146FDC
oklch(55.5% 0.185 256.9)
-
Step 700
700
#025CBF
oklch(49% 0.172 256.9)
-
Step 800
800 (this color)
#004593
oklch(40.3% 0.142 256.8)
-
Step 900
900
#13407B
oklch(37.6% 0.111 256.9)
-
Step 950
950
#0D2648
oklch(27% 0.07 257)
#004593 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) | #094E96 | 0.027 |
| Deuteranopia (no green cones) | #004291 | 0.009 |
| Tritanopia (no blue cones) | #005865 | 0.106 |
| Achromatopsia (no color) | #474747 | 0.142 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #004593
#004593
oklch(40.3% 0.142 256.8)
- #624100
#624100
oklch(40.3% 0.085 76.3)
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 #004593, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.020
- Twilight Blue #0A437A ΔE 0.042
- Light Navy #155084 ΔE 0.045
- Dusk Blue #26538D ΔE 0.051
- Sapphire #2138AB ΔE 0.052
- Deep Sea Blue #015482 ΔE 0.056
- Blueberry #464196 ΔE 0.065
- Dark Slate Blue #483D8B ΔE 0.070
Use #004593 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.