#045657
Closest named color: Deep Teal (#00555A). oklch(41.1% 0.069 196.2), rgb(4, 86, 87).
Aa
White text reads best on this color (8.48:1).
About this color
#045657 is a dark, muted teal or cyan. In OKLCH its lightness is 41%, its chroma 0.069 and its hue 196°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Teal (#00555A), ΔE 0.007 away. White text reads best on it, at 8.48:1.
| Hue family | Teals and cyans |
| Lightness | dark (41%) |
| Chroma | muted (0.069) |
| Temperature | cool |
| Nearest name | Deep Teal (#00555A) |
| Black text | 2.47:1 |
| White text | 8.48:1 |
Values
| HEX | #045657 |
| RGB | rgb(4, 86, 87) |
| HSL | hsl(181, 91%, 18%) |
| OKLCH | oklch(41.1% 0.069 196.2) |
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 #045657 | 8.48:1 | AAA | Lc -93.4 | Preferred for body text |
| Black text on #045657 | 2.47:1 | Fails | Lc 15.2 | Dividers and decoration only |
| #045657 text on white | 8.48:1 | AAA | Lc 88.8 | Fine for body text |
| #045657 text on black | 2.47:1 | Fails | Lc -13.4 | Not readable |
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
#F2F7F6
oklch(97.2% 0.005 183)
-
Step 100
100
#E1ECEC
oklch(93.5% 0.012 197)
-
Step 200
200
#C9DEDE
oklch(88.5% 0.022 196.8)
-
Step 300
300
#A3C9C9
oklch(80.8% 0.04 196.4)
-
Step 400
400
#6FADAE
oklch(70.6% 0.064 197.1)
-
Step 500
500
#43999A
oklch(63.1% 0.082 196.3)
-
Step 600
600
#188385
oklch(55.6% 0.089 196.9)
-
Step 700
700
#036F70
oklch(49.1% 0.083 195.9)
-
Step 800
800 (this color)
#045657
oklch(41.1% 0.069 196.2)
-
Step 900
900
#174A4B
oklch(37.6% 0.053 197)
-
Step 950
950
#0F2C2C
oklch(27.1% 0.035 195.3)
#045657 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) | #4F5157 | 0.071 |
| Deuteranopia (no green cones) | #454957 | 0.067 |
| Tritanopia (no blue cones) | #005956 | 0.011 |
| Achromatopsia (no color) | #4D4D4D | 0.069 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #045657
#045657
oklch(41.1% 0.069 196.2)
- #6B3A3E
#6B3A3E
oklch(41.1% 0.069 15.4)
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 #045657, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Teal #00555A ΔE 0.007
- Dark Blue Green #005249 ΔE 0.024
- Dark Teal #014D4E ΔE 0.031
- Dark Slate Gray #2F4F4F ΔE 0.032
- Petrol #005F6A ΔE 0.037
- Dark Green Blue #1F6357 ΔE 0.047
- Charcoal #264653 ΔE 0.052
- Dark Grey Blue #29465B ΔE 0.057
Use #045657 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.