#045587
Closest named color: Deep Sea Blue (#015482). oklch(43.4% 0.107 244.8), rgb(4, 85, 135).
Aa
White text reads best on this color (7.91:1).
About this color
#045587 is a dark, moderately saturated blue. In OKLCH its lightness is 43%, its chroma 0.107 and its hue 245°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.009 away. White text reads best on it, at 7.91:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.107) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.65:1 |
| White text | 7.91:1 |
Values
| HEX | #045587 |
| RGB | rgb(4, 85, 135) |
| HSL | hsl(203, 94%, 27%) |
| OKLCH | oklch(43.4% 0.107 244.8) |
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 #045587 | 7.91:1 | AAA | Lc -91.6 | Preferred for body text |
| Black text on #045587 | 2.65:1 | Fails | Lc 17.1 | Dividers and decoration only |
| #045587 text on white | 7.91:1 | AAA | Lc 86.9 | Fine for body text |
| #045587 text on black | 2.65:1 | Fails | Lc -15.2 | 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
#E0EBF5
oklch(93.5% 0.018 245.4)
-
Step 200
200
#C7DCEF
oklch(88.5% 0.035 245.5)
-
Step 300
300
#9FC6E7
oklch(81% 0.063 244.2)
-
Step 400
400
#69A7DB
oklch(70.7% 0.1 245.2)
-
Step 500
500
#3A90D1
oklch(63.1% 0.128 244.9)
-
Step 600
600
#0279BE
oklch(55.6% 0.139 244.7)
-
Step 700
700
#0065A1
oklch(49% 0.124 245.1)
-
Step 800
800 (this color)
#045587
oklch(43.4% 0.107 244.8)
-
Step 900
900
#11456A
oklch(37.7% 0.083 244.6)
-
Step 950
950
#0C293E
oklch(27.1% 0.052 243.5)
#045587 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) | #3D5789 | 0.044 |
| Deuteranopia (no green cones) | #2A4C86 | 0.031 |
| Tritanopia (no blue cones) | #006167 | 0.074 |
| Achromatopsia (no color) | #515151 | 0.107 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #045587
#045587
oklch(43.4% 0.107 244.8)
- #754300
#754300
oklch(43.4% 0.098 64.2)
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 #045587, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.009
- Light Navy #155084 ΔE 0.015
- Dusk Blue #26538D ΔE 0.022
- Light Navy Blue #2E5A88 ΔE 0.032
- Cobalt #1E488F ΔE 0.042
- Denim Blue #3B5B92 ΔE 0.049
- Twilight Blue #0A437A ΔE 0.055
- Peacock Blue #016795 ΔE 0.055
Use #045587 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.