#045F70
Closest named color: Petrol (#005F6A). oklch(44.8% 0.078 215.8), rgb(4, 95, 112).
Aa
White text reads best on this color (7.30:1).
About this color
#045F70 is a dark, moderately saturated teal or cyan. In OKLCH its lightness is 45%, 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 7.30:1.
| Hue family | Teals and cyans |
| Lightness | dark (45%) |
| Chroma | moderately saturated (0.078) |
| Temperature | cool |
| Nearest name | Petrol (#005F6A) |
| Black text | 2.87:1 |
| White text | 7.30:1 |
Values
| HEX | #045F70 |
| RGB | rgb(4, 95, 112) |
| HSL | hsl(189, 93%, 23%) |
| OKLCH | oklch(44.8% 0.078 215.8) |
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 #045F70 | 7.30:1 | AAA | Lc -89.8 | Fine for body text |
| Black text on #045F70 | 2.87:1 | Fails | Lc 19.1 | Dividers and decoration only |
| #045F70 text on white | 7.30:1 | AAA | Lc 84.9 | Fine for body text |
| #045F70 text on black | 2.87:1 | Fails | Lc -17.1 | 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
#F1F7F8
oklch(97.2% 0.007 208.8)
-
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
#3797AD
oklch(63% 0.093 215.9)
-
Step 600
600
#008198
oklch(55.6% 0.099 216.1)
-
Step 700
700
#006D80
oklch(49.2% 0.087 215.3)
-
Step 800
800 (this color)
#045F70
oklch(44.8% 0.078 215.8)
-
Step 900
900
#0E4956
oklch(37.6% 0.061 216.5)
-
Step 950
950
#0C2B32
oklch(27% 0.038 215.2)
#045F70 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) | #535C71 | 0.068 |
| Deuteranopia (no green cones) | #465270 | 0.062 |
| Tritanopia (no blue cones) | #006564 | 0.032 |
| Achromatopsia (no color) | #565656 | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #045F70
#045F70
oklch(44.8% 0.078 215.8)
- #7A4436
#7A4436
oklch(44.9% 0.078 35.4)
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 #045F70, 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 0.036
- Deep Teal #00555A ΔE 0.043
- Dark Green Blue #1F6357 ΔE 0.048
- YInMn Blue #415A77 ΔE 0.049
- Deep Sea Blue #015482 ΔE 0.052
- Light Navy Blue #2E5A88 ΔE 0.054
- Peacock Blue #016795 ΔE 0.061
Use #045F70 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.