#004568
Closest named color: Twilight Blue (#0A437A). oklch(37.2% 0.085 239.7), rgb(0, 69, 104).
Aa
White text reads best on this color (10.23:1).
About this color
#004568 is a dark, moderately saturated blue. In OKLCH its lightness is 37%, its chroma 0.085 and its hue 240°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.034 away. White text reads best on it, at 10.23:1.
| Hue family | Blues |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.085) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.05:1 |
| White text | 10.23:1 |
Values
| HEX | #004568 |
| RGB | rgb(0, 69, 104) |
| HSL | hsl(200, 100%, 20%) |
| OKLCH | oklch(37.2% 0.085 239.7) |
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 #004568 | 10.23:1 | AAA | Lc -97.4 | Preferred for body text |
| Black text on #004568 | 2.05:1 | Fails | Lc 10.7 | Not readable |
| #004568 text on white | 10.23:1 | AAA | Lc 93.2 | Preferred for body text |
| #004568 text on black | 2.05:1 | Fails | Lc -9.2 | 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 900.
-
Step 50
50
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#DFECF5
oklch(93.6% 0.018 237.8)
-
Step 200
200
#C5DDEE
oklch(88.5% 0.035 238.7)
-
Step 300
300
#9CC7E6
oklch(81% 0.063 239.9)
-
Step 400
400
#61A9D9
oklch(70.7% 0.101 239.5)
-
Step 500
500
#2892CF
oklch(63% 0.13 239.8)
-
Step 600
600
#007BB5
oklch(55.6% 0.127 239.8)
-
Step 700
700
#006799
oklch(49% 0.112 240)
-
Step 800
800
#00557E
oklch(42.8% 0.097 239.2)
-
Step 900
900 (this color)
#004568
oklch(37.2% 0.085 239.7)
-
Step 950
950
#07293E
oklch(26.9% 0.055 240.7)
#004568 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) | #34466A | 0.043 |
| Deuteranopia (no green cones) | #263D67 | 0.033 |
| Tritanopia (no blue cones) | #004E51 | 0.056 |
| Achromatopsia (no color) | #414141 | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #004568
#004568
oklch(37.2% 0.085 239.7)
- #603304
#603304
oklch(37.1% 0.085 59.2)
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 #004568, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.034
- Dark Grey Blue #29465B ΔE 0.036
- Marine Blue #01386A ΔE 0.042
- Charcoal #264653 ΔE 0.043
- Dark Blue Grey #1F3B4D ΔE 0.051
- Prussian Blue #1D3557 ΔE 0.053
- Midnight Green #073B4C ΔE 0.053
- Light Navy #155084 ΔE 0.057
Use #004568 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.