#045E64
Closest named color: Petrol (#005F6A). oklch(43.9% 0.074 202.5), rgb(4, 94, 100).
Aa
White text reads best on this color (7.52:1).
About this color
#045E64 is a dark, moderately saturated teal or cyan. In OKLCH its lightness is 44%, its chroma 0.074 and its hue 203°. 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 7.52:1.
| Hue family | Teals and cyans |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.074) |
| Temperature | cool |
| Nearest name | Petrol (#005F6A) |
| Black text | 2.79:1 |
| White text | 7.52:1 |
Values
| HEX | #045E64 |
| RGB | rgb(4, 94, 100) |
| HSL | hsl(184, 92%, 20%) |
| OKLCH | oklch(43.9% 0.074 202.5) |
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 #045E64 | 7.52:1 | AAA | Lc -90.5 | Preferred for body text |
| Black text on #045E64 | 2.79:1 | Fails | Lc 18.3 | Dividers and decoration only |
| #045E64 text on white | 7.52:1 | AAA | Lc 85.7 | Fine for body text |
| #045E64 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
#F1F7F7
oklch(97.2% 0.006 197.1)
-
Step 100
100
#E1ECED
oklch(93.5% 0.012 203.5)
-
Step 200
200
#C8DEE0
oklch(88.5% 0.024 203.4)
-
Step 300
300
#A1C9CD
oklch(80.8% 0.043 203.9)
-
Step 400
400
#6AAEB3
oklch(70.8% 0.069 201.7)
-
Step 500
500
#3A99A1
oklch(63.1% 0.088 203)
-
Step 600
600
#00838B
oklch(55.5% 0.095 202.3)
-
Step 700
700
#006E75
oklch(49% 0.083 202.5)
-
Step 800
800 (this color)
#045E64
oklch(43.9% 0.074 202.5)
-
Step 900
900
#104A4F
oklch(37.6% 0.057 203.6)
-
Step 950
950
#0D2C2E
oklch(27.1% 0.036 201.1)
#045E64 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) | #555964 | 0.073 |
| Deuteranopia (no green cones) | #4A5164 | 0.068 |
| Tritanopia (no blue cones) | #006260 | 0.016 |
| Achromatopsia (no color) | #545454 | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #045E64
#045E64
oklch(43.9% 0.074 202.5)
- #76413F
#76413F
oklch(43.9% 0.074 22.8)
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 #045E64, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Petrol #005F6A ΔE 0.010
- Deep Teal #00555A ΔE 0.031
- Dark Green Blue #1F6357 ΔE 0.033
- Dark Aqua #05696B ΔE 0.035
- Dark Slate Gray #2F4F4F ΔE 0.052
- Dark Blue Green #005249 ΔE 0.052
- Dark Teal #014D4E ΔE 0.059
- YInMn Blue #415A77 ΔE 0.061
Use #045E64 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.