#04564C
Closest named color: Dark Blue Green (#005249). oklch(40.7% 0.072 181.4), rgb(4, 86, 76).
Aa
White text reads best on this color (8.60:1).
About this color
#04564C is a dark, moderately saturated teal or cyan. In OKLCH its lightness is 41%, its chroma 0.072 and its hue 181°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Blue Green (#005249), ΔE 0.014 away. White text reads best on it, at 8.60:1.
| Hue family | Teals and cyans |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.072) |
| Temperature | cool |
| Nearest name | Dark Blue Green (#005249) |
| Black text | 2.44:1 |
| White text | 8.60:1 |
Values
| HEX | #04564C |
| RGB | rgb(4, 86, 76) |
| HSL | hsl(173, 91%, 18%) |
| OKLCH | oklch(40.7% 0.072 181.4) |
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 #04564C | 8.60:1 | AAA | Lc -93.7 | Preferred for body text |
| Black text on #04564C | 2.44:1 | Fails | Lc 14.9 | Not readable |
| #04564C text on white | 8.60:1 | AAA | Lc 89.1 | Fine for body text |
| #04564C text on black | 2.44:1 | Fails | Lc -13.1 | 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
#E2EDEA
oklch(93.7% 0.012 178)
-
Step 200
200
#C9DEDA
oklch(88.4% 0.023 183.1)
-
Step 300
300
#A4CAC2
oklch(80.9% 0.042 181)
-
Step 400
400
#70AFA3
oklch(70.8% 0.067 180.9)
-
Step 500
500
#449A8D
oklch(63% 0.085 182.1)
-
Step 600
600
#1B8577
oklch(55.6% 0.093 181.5)
-
Step 700
700
#077064
oklch(49% 0.086 182)
-
Step 800
800 (this color)
#04564C
oklch(40.7% 0.072 181.4)
-
Step 900
900
#184B43
oklch(37.6% 0.056 181)
-
Step 950
950
#102C27
oklch(27% 0.035 180.2)
#04564C 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) | #52504C | 0.077 |
| Deuteranopia (no green cones) | #48494D | 0.073 |
| Tritanopia (no blue cones) | #005853 | 0.012 |
| Achromatopsia (no color) | #4C4C4C | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #04564C
#04564C
oklch(40.7% 0.072 181.4)
- #693847
#693847
oklch(40.7% 0.072 1.2)
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 #04564C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Green #005249 ΔE 0.014
- Deep Teal #00555A ΔE 0.025
- Dark Teal #014D4E ΔE 0.032
- Dark Slate Gray #2F4F4F ΔE 0.037
- Dark Green Blue #1F6357 ΔE 0.047
- Spruce #0A5F38 ΔE 0.050
- Petrol #005F6A ΔE 0.051
- Pine #2B5D34 ΔE 0.054
Use #04564C 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.