#045B7D
Closest named color: Deep Sea Blue (#015482). oklch(44.4% 0.09 233), rgb(4, 91, 125).
Aa
White text reads best on this color (7.50:1).
About this color
#045B7D is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.090 and its hue 233°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.025 away. White text reads best on it, at 7.50:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.090) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.79:1 |
| White text | 7.50:1 |
Values
| HEX | #045B7D |
| RGB | rgb(4, 91, 125) |
| HSL | hsl(197, 94%, 25%) |
| OKLCH | oklch(44.4% 0.09 233) |
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 #045B7D | 7.50:1 | AAA | Lc -90.4 | Preferred for body text |
| Black text on #045B7D | 2.79:1 | Fails | Lc 18.4 | Dividers and decoration only |
| #045B7D text on white | 7.50:1 | AAA | Lc 85.6 | Fine for body text |
| #045B7D text on black | 2.79:1 | Fails | Lc -16.5 | 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
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E0ECF3
oklch(93.6% 0.016 233)
-
Step 200
200
#C7DDEA
oklch(88.5% 0.03 233.6)
-
Step 300
300
#9FC7DE
oklch(80.9% 0.054 233.5)
-
Step 400
400
#68AACD
oklch(70.7% 0.085 232.9)
-
Step 500
500
#3894C0
oklch(63.1% 0.108 233.1)
-
Step 600
600
#007DAB
oklch(55.5% 0.115 233.2)
-
Step 700
700
#006991
oklch(49% 0.102 233.6)
-
Step 800
800 (this color)
#045B7D
oklch(44.4% 0.09 233)
-
Step 900
900
#0F4761
oklch(37.6% 0.071 234)
-
Step 950
950
#0C2A39
oklch(27% 0.045 233.7)
#045B7D 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) | #4A5A7F | 0.057 |
| Deuteranopia (no green cones) | #3B507C | 0.047 |
| Tritanopia (no blue cones) | #006467 | 0.053 |
| Achromatopsia (no color) | #555555 | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #045B7D
#045B7D
oklch(44.4% 0.09 233)
- #7A441E
#7A441E
oklch(44.5% 0.09 53)
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 #045B7D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.025
- Light Navy Blue #2E5A88 ΔE 0.032
- Petrol #005F6A ΔE 0.038
- Light Navy #155084 ΔE 0.038
- Dusk Blue #26538D ΔE 0.043
- YInMn Blue #415A77 ΔE 0.045
- Peacock Blue #016795 ΔE 0.048
- Denim #3B638C ΔE 0.053
Use #045B7D 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.