#045C83
Closest named color: Deep Sea Blue (#015482). oklch(45% 0.096 236.5), rgb(4, 92, 131).
Aa
White text reads best on this color (7.33:1).
About this color
#045C83 is a dark, moderately saturated blue. In OKLCH its lightness is 45%, its chroma 0.096 and its hue 236°. 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 7.33:1.
| Hue family | Blues |
| Lightness | dark (45%) |
| Chroma | moderately saturated (0.096) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.86:1 |
| White text | 7.33:1 |
Values
| HEX | #045C83 |
| RGB | rgb(4, 92, 131) |
| HSL | hsl(198, 94%, 26%) |
| OKLCH | oklch(45% 0.096 236.5) |
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 #045C83 | 7.33:1 | AAA | Lc -89.9 | Fine for body text |
| Black text on #045C83 | 2.86:1 | Fails | Lc 19.1 | Dividers and decoration only |
| #045C83 text on white | 7.33:1 | AAA | Lc 85.0 | Fine for body text |
| #045C83 text on black | 2.86:1 | Fails | Lc -17.0 | 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
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E0ECF3
oklch(93.6% 0.016 233)
-
Step 200
200
#C7DDEB
oklch(88.6% 0.03 235.7)
-
Step 300
300
#9FC7E1
oklch(81% 0.056 236.9)
-
Step 400
400
#67A9D1
oklch(70.6% 0.089 236.5)
-
Step 500
500
#3693C5
oklch(63.1% 0.114 236.4)
-
Step 600
600
#007CB0
oklch(55.5% 0.121 236.7)
-
Step 700
700
#006895
oklch(49% 0.107 237)
-
Step 800
800 (this color)
#045C83
oklch(45% 0.096 236.5)
-
Step 900
900
#0D4764
oklch(37.7% 0.075 236.4)
-
Step 950
950
#0B2A3A
oklch(27.1% 0.047 234.9)
#045C83 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) | #495C85 | 0.055 |
| Deuteranopia (no green cones) | #395182 | 0.045 |
| Tritanopia (no blue cones) | #00666A | 0.059 |
| Achromatopsia (no color) | #565656 | 0.096 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #045C83
#045C83
oklch(45% 0.096 236.5)
- #7C4516
#7C4516
oklch(44.9% 0.096 56.6)
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 #045C83, 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 0.026
- Light Navy #155084 ΔE 0.037
- Dusk Blue #26538D ΔE 0.037
- Peacock Blue #016795 ΔE 0.040
- YInMn Blue #415A77 ΔE 0.046
- Petrol #005F6A ΔE 0.046
- Denim Blue #3B5B92 ΔE 0.047
Use #045C83 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.