#045C74
Closest named color: Petrol (#005F6A). oklch(44.1% 0.082 223.9), rgb(4, 92, 116).
Aa
White text reads best on this color (7.53:1).
About this color
#045C74 is a dark, moderately saturated teal or cyan. In OKLCH its lightness is 44%, its chroma 0.082 and its hue 224°. Its hue sits on the cool side of the wheel. The nearest named color is Petrol (#005F6A), ΔE 0.022 away. White text reads best on it, at 7.53:1.
| Hue family | Teals and cyans |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.082) |
| Temperature | cool |
| Nearest name | Petrol (#005F6A) |
| Black text | 2.78:1 |
| White text | 7.53:1 |
Values
| HEX | #045C74 |
| RGB | rgb(4, 92, 116) |
| HSL | hsl(193, 93%, 24%) |
| OKLCH | oklch(44.1% 0.082 223.9) |
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 #045C74 | 7.53:1 | AAA | Lc -90.5 | Preferred for body text |
| Black text on #045C74 | 2.78:1 | Fails | Lc 18.3 | Dividers and decoration only |
| #045C74 text on white | 7.53:1 | AAA | Lc 85.7 | Fine for body text |
| #045C74 text on black | 2.78:1 | 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
#E1ECF1
oklch(93.6% 0.014 226.6)
-
Step 200
200
#C7DDE6
oklch(88.4% 0.027 224.3)
-
Step 300
300
#A0C8D8
oklch(80.9% 0.048 224.2)
-
Step 400
400
#69ABC4
oklch(70.6% 0.076 224.2)
-
Step 500
500
#3996B5
oklch(63.1% 0.097 223.8)
-
Step 600
600
#0080A0
oklch(55.7% 0.104 223.4)
-
Step 700
700
#006B87
oklch(49% 0.092 224)
-
Step 800
800 (this color)
#045C74
oklch(44.1% 0.082 223.9)
-
Step 900
900
#10495A
oklch(37.8% 0.063 222.6)
-
Step 950
950
#0C2B35
oklch(27.1% 0.04 222.7)
#045C74 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) | #4E5A75 | 0.062 |
| Deuteranopia (no green cones) | #415074 | 0.056 |
| Tritanopia (no blue cones) | #006364 | 0.040 |
| Achromatopsia (no color) | #545454 | 0.082 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #045C74
#045C74
oklch(44.1% 0.082 223.9)
- #78432C
#78432C
oklch(44.2% 0.081 43.7)
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 #045C74, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Petrol #005F6A ΔE 0.022
- Deep Sea Blue #015482 ΔE 0.039
- Light Navy Blue #2E5A88 ΔE 0.045
- Deep Teal #00555A ΔE 0.045
- YInMn Blue #415A77 ΔE 0.046
- Dark Aqua #05696B ΔE 0.049
- Light Navy #155084 ΔE 0.051
- Peacock Blue #016795 ΔE 0.058
Use #045C74 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.