#045990
Closest named color: Dusk Blue (#26538D). oklch(45% 0.114 246.1), rgb(4, 89, 144).
Aa
White text reads best on this color (7.40:1).
About this color
#045990 is a dark, moderately saturated blue. In OKLCH its lightness is 45%, its chroma 0.114 and its hue 246°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.022 away. White text reads best on it, at 7.40:1.
| Hue family | Blues |
| Lightness | dark (45%) |
| Chroma | moderately saturated (0.114) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.83:1 |
| White text | 7.40:1 |
Values
| HEX | #045990 |
| RGB | rgb(4, 89, 144) |
| HSL | hsl(204, 95%, 29%) |
| OKLCH | oklch(45% 0.114 246.1) |
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 #045990 | 7.40:1 | AAA | Lc -90.0 | Preferred for body text |
| Black text on #045990 | 2.83:1 | Fails | Lc 18.9 | Dividers and decoration only |
| #045990 text on white | 7.40:1 | AAA | Lc 85.2 | Fine for body text |
| #045990 text on black | 2.83:1 | Fails | Lc -16.9 | Dividers and decoration only |
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
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E0EBF6
oklch(93.5% 0.019 248)
-
Step 200
200
#C6DCF1
oklch(88.5% 0.037 247)
-
Step 300
300
#9EC6EA
oklch(81% 0.067 245.9)
-
Step 400
400
#66A7DF
oklch(70.7% 0.106 246)
-
Step 500
500
#348FD6
oklch(63% 0.136 246.2)
-
Step 600
600
#0078C1
oklch(55.5% 0.143 246.2)
-
Step 700
700
#0065A3
oklch(49.1% 0.126 245.9)
-
Step 800
800 (this color)
#045990
oklch(45% 0.114 246.1)
-
Step 900
900
#0C456D
oklch(37.7% 0.088 245.4)
-
Step 950
950
#0B2840
oklch(26.9% 0.056 247)
#045990 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) | #3E5C92 | 0.044 |
| Deuteranopia (no green cones) | #2A508F | 0.030 |
| Tritanopia (no blue cones) | #00666D | 0.079 |
| Achromatopsia (no color) | #555555 | 0.114 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #045990
#045990
oklch(45% 0.114 246.1)
- #7A4800
#7A4800
oklch(45% 0.1 66.1)
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 #045990, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.022
- Deep Sea Blue #015482 ΔE 0.026
- Light Navy Blue #2E5A88 ΔE 0.027
- Light Navy #155084 ΔE 0.030
- Denim Blue #3B5B92 ΔE 0.039
- Peacock Blue #016795 ΔE 0.042
- Cobalt #1E488F ΔE 0.048
- Denim #3B638C ΔE 0.052
Use #045990 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.