#045E6F
Closest named color: Petrol (#005F6A). oklch(44.4% 0.078 215.9), rgb(4, 94, 111).
Aa
White text reads best on this color (7.40:1).
About this color
#045E6F is a dark, moderately saturated teal or cyan. In OKLCH its lightness is 44%, its chroma 0.078 and its hue 216°. Its hue sits on the cool side of the wheel. The nearest named color is Petrol (#005F6A), ΔE 0.010 away. White text reads best on it, at 7.40:1.
| Hue family | Teals and cyans |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.078) |
| Temperature | cool |
| Nearest name | Petrol (#005F6A) |
| Black text | 2.83:1 |
| White text | 7.40:1 |
Values
| HEX | #045E6F |
| RGB | rgb(4, 94, 111) |
| HSL | hsl(190, 93%, 23%) |
| OKLCH | oklch(44.4% 0.078 215.9) |
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 #045E6F | 7.40:1 | AAA | Lc -90.1 | Preferred for body text |
| Black text on #045E6F | 2.83:1 | Fails | Lc 18.8 | Dividers and decoration only |
| #045E6F text on white | 7.40:1 | AAA | Lc 85.3 | Fine for body text |
| #045E6F text on black | 2.83:1 | Fails | Lc -16.8 | 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
#F1F6F8
oklch(97% 0.006 223.5)
-
Step 100
100
#E1ECEF
oklch(93.6% 0.012 215.8)
-
Step 200
200
#C7DEE4
oklch(88.5% 0.026 215.2)
-
Step 300
300
#A0C9D3
oklch(81% 0.046 214.2)
-
Step 400
400
#69ACBE
oklch(70.6% 0.073 216.8)
-
Step 500
500
#3897AD
oklch(63% 0.093 216.1)
-
Step 600
600
#008198
oklch(55.6% 0.099 216.1)
-
Step 700
700
#006C80
oklch(49% 0.087 216.4)
-
Step 800
800 (this color)
#045E6F
oklch(44.4% 0.078 215.9)
-
Step 900
900
#0F4956
oklch(37.6% 0.06 216.6)
-
Step 950
950
#0C2B32
oklch(27% 0.038 215.2)
#045E6F 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) | #535B70 | 0.069 |
| Deuteranopia (no green cones) | #46516F | 0.062 |
| Tritanopia (no blue cones) | #006463 | 0.032 |
| Achromatopsia (no color) | #555555 | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #045E6F
#045E6F
oklch(44.4% 0.078 215.9)
- #784335
#784335
oklch(44.4% 0.077 35.7)
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 #045E6F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Petrol #005F6A ΔE 0.010
- Dark Aqua #05696B ΔE 0.038
- Deep Teal #00555A ΔE 0.040
- Dark Green Blue #1F6357 ΔE 0.048
- YInMn Blue #415A77 ΔE 0.049
- Deep Sea Blue #015482 ΔE 0.051
- Light Navy Blue #2E5A88 ΔE 0.054
- Dark Slate Gray #2F4F4F ΔE 0.061
Use #045E6F 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.