#045C6A
Closest named color: Petrol (#005F6A). oklch(43.7% 0.075 212.8), rgb(4, 92, 106).
Aa
White text reads best on this color (7.65:1).
About this color
#045C6A is a dark, moderately saturated teal or cyan. In OKLCH its lightness is 44%, its chroma 0.075 and its hue 213°. 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 7.65:1.
| Hue family | Teals and cyans |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.075) |
| Temperature | cool |
| Nearest name | Petrol (#005F6A) |
| Black text | 2.74:1 |
| White text | 7.65:1 |
Values
| HEX | #045C6A |
| RGB | rgb(4, 92, 106) |
| HSL | hsl(188, 93%, 22%) |
| OKLCH | oklch(43.7% 0.075 212.8) |
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 #045C6A | 7.65:1 | AAA | Lc -90.9 | Preferred for body text |
| Black text on #045C6A | 2.74:1 | Fails | Lc 17.9 | Dividers and decoration only |
| #045C6A text on white | 7.65:1 | AAA | Lc 86.1 | Fine for body text |
| #045C6A text on black | 2.74:1 | Fails | Lc -15.9 | 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
#C8DEE3
oklch(88.6% 0.024 212.9)
-
Step 300
300
#A1C9D1
oklch(81% 0.044 211.2)
-
Step 400
400
#6AACBB
oklch(70.6% 0.071 213.8)
-
Step 500
500
#3B98AA
oklch(63.2% 0.09 212.7)
-
Step 600
600
#008295
oklch(55.7% 0.097 212.5)
-
Step 700
700
#006D7D
oklch(49.1% 0.086 212.3)
-
Step 800
800 (this color)
#045C6A
oklch(43.7% 0.075 212.8)
-
Step 900
900
#114A54
oklch(37.8% 0.059 212)
-
Step 950
950
#0D2B31
oklch(27% 0.037 212.9)
#045C6A 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) | #51586B | 0.068 |
| Deuteranopia (no green cones) | #454F6A | 0.063 |
| Tritanopia (no blue cones) | #006160 | 0.027 |
| Achromatopsia (no color) | #535353 | 0.075 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #045C6A
#045C6A
oklch(43.7% 0.075 212.8)
- #754136
#754136
oklch(43.6% 0.075 32.9)
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 #045C6A, 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 Aqua #05696B ΔE 0.042
- Dark Green Blue #1F6357 ΔE 0.046
- Dark Slate Gray #2F4F4F ΔE 0.053
- Deep Sea Blue #015482 ΔE 0.053
- YInMn Blue #415A77 ΔE 0.054
- Dark Blue Green #005249 ΔE 0.058
Use #045C6A 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.