#045C5D
Closest named color: Petrol (#005F6A). oklch(43.1% 0.072 196.1), rgb(4, 92, 93).
Aa
White text reads best on this color (7.79:1).
About this color
#045C5D is a dark, moderately saturated teal or cyan. In OKLCH its lightness is 43%, its chroma 0.072 and its hue 196°. Its hue sits on the cool side of the wheel. The nearest named color is Petrol (#005F6A), ΔE 0.021 away. White text reads best on it, at 7.79:1.
| Hue family | Teals and cyans |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.072) |
| Temperature | cool |
| Nearest name | Petrol (#005F6A) |
| Black text | 2.69:1 |
| White text | 7.79:1 |
Values
| HEX | #045C5D |
| RGB | rgb(4, 92, 93) |
| HSL | hsl(181, 92%, 19%) |
| OKLCH | oklch(43.1% 0.072 196.1) |
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 #045C5D | 7.79:1 | AAA | Lc -91.4 | Preferred for body text |
| Black text on #045C5D | 2.69:1 | Fails | Lc 17.4 | Dividers and decoration only |
| #045C5D text on white | 7.79:1 | AAA | Lc 86.6 | Fine for body text |
| #045C5D text on black | 2.69:1 | Fails | Lc -15.5 | 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
#E1EDEC
oklch(93.7% 0.013 190.9)
-
Step 200
200
#C8DEDE
oklch(88.4% 0.023 196.7)
-
Step 300
300
#A2CAC9
oklch(81% 0.042 194.5)
-
Step 400
400
#6CAEAE
oklch(70.7% 0.067 195.7)
-
Step 500
500
#3D9A9B
oklch(63.2% 0.087 196.2)
-
Step 600
600
#058485
oklch(55.6% 0.094 195.7)
-
Step 700
700
#006F70
oklch(49.1% 0.084 195.9)
-
Step 800
800 (this color)
#045C5D
oklch(43.1% 0.072 196.1)
-
Step 900
900
#124B4B
oklch(37.8% 0.057 195)
-
Step 950
950
#0E2C2C
oklch(27.1% 0.035 195.3)
#045C5D 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) | #55575D | 0.075 |
| Deuteranopia (no green cones) | #4A4F5D | 0.069 |
| Tritanopia (no blue cones) | #005F5C | 0.011 |
| Achromatopsia (no color) | #525252 | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #045C5D
#045C5D
oklch(43.1% 0.072 196.1)
- #723F42
#723F42
oklch(43.1% 0.071 16.7)
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 #045C5D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Petrol #005F6A ΔE 0.021
- Deep Teal #00555A ΔE 0.023
- Dark Green Blue #1F6357 ΔE 0.031
- Dark Blue Green #005249 ΔE 0.041
- Dark Aqua #05696B ΔE 0.043
- Dark Slate Gray #2F4F4F ΔE 0.044
- Dark Teal #014D4E ΔE 0.050
- Spruce #0A5F38 ΔE 0.063
Use #045C5D 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.