#045B7C
Closest named color: Deep Sea Blue (#015482). oklch(44.3% 0.089 232.2), rgb(4, 91, 124).
Aa
White text reads best on this color (7.51:1).
About this color
#045B7C is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.089 and its hue 232°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.026 away. White text reads best on it, at 7.51:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.089) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.79:1 |
| White text | 7.51:1 |
Values
| HEX | #045B7C |
| RGB | rgb(4, 91, 124) |
| HSL | hsl(196, 94%, 25%) |
| OKLCH | oklch(44.3% 0.089 232.2) |
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 #045B7C | 7.51:1 | AAA | Lc -90.5 | Preferred for body text |
| Black text on #045B7C | 2.79:1 | Fails | Lc 18.4 | Dividers and decoration only |
| #045B7C text on white | 7.51:1 | AAA | Lc 85.6 | Fine for body text |
| #045B7C text on black | 2.79:1 | Fails | Lc -16.4 | 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
#E0ECF2
oklch(93.6% 0.015 229)
-
Step 200
200
#C7DDE9
oklch(88.5% 0.029 231.5)
-
Step 300
300
#A0C7DD
oklch(80.9% 0.052 233)
-
Step 400
400
#68AACC
oklch(70.7% 0.084 232.1)
-
Step 500
500
#3894BF
oklch(63.1% 0.107 232.4)
-
Step 600
600
#007EAA
oklch(55.7% 0.113 231.8)
-
Step 700
700
#006A90
oklch(49.2% 0.1 232)
-
Step 800
800 (this color)
#045B7C
oklch(44.3% 0.089 232.2)
-
Step 900
900
#0F4760
oklch(37.6% 0.07 232.9)
-
Step 950
950
#0C2A38
oklch(27% 0.044 231.9)
#045B7C 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) | #4A5A7E | 0.057 |
| Deuteranopia (no green cones) | #3C507B | 0.048 |
| Tritanopia (no blue cones) | #006466 | 0.053 |
| Achromatopsia (no color) | #545454 | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #045B7C
#045B7C
oklch(44.3% 0.089 232.2)
- #79441F
#79441F
oklch(44.3% 0.089 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 #045B7C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.026
- Light Navy Blue #2E5A88 ΔE 0.033
- Petrol #005F6A ΔE 0.036
- Light Navy #155084 ΔE 0.039
- Dusk Blue #26538D ΔE 0.044
- YInMn Blue #415A77 ΔE 0.045
- Peacock Blue #016795 ΔE 0.049
- Denim #3B638C ΔE 0.054
Use #045B7C 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.