#04554C
Closest named color: Dark Blue Green (#005249). oklch(40.4% 0.071 182.5), rgb(4, 85, 76).
Aa
White text reads best on this color (8.71:1).
About this color
#04554C is a dark, moderately saturated teal or cyan. In OKLCH its lightness is 40%, its chroma 0.071 and its hue 183°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Blue Green (#005249), ΔE 0.011 away. White text reads best on it, at 8.71:1.
| Hue family | Teals and cyans |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.071) |
| Temperature | cool |
| Nearest name | Dark Blue Green (#005249) |
| Black text | 2.40:1 |
| White text | 8.71:1 |
Values
| HEX | #04554C |
| RGB | rgb(4, 85, 76) |
| HSL | hsl(173, 91%, 17%) |
| OKLCH | oklch(40.4% 0.071 182.5) |
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 #04554C | 8.71:1 | AAA | Lc -94.0 | Preferred for body text |
| Black text on #04554C | 2.40:1 | Fails | Lc 14.5 | Not readable |
| #04554C text on white | 8.71:1 | AAA | Lc 89.4 | Fine for body text |
| #04554C text on black | 2.40:1 | Fails | Lc -12.8 | 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
#A4CAC3
oklch(80.9% 0.042 182.8)
-
Step 400
400
#70AEA4
oklch(70.6% 0.066 183.1)
-
Step 500
500
#459A8E
oklch(63% 0.084 183)
-
Step 600
600
#1D8578
oklch(55.7% 0.092 182.3)
-
Step 700
700
#097065
oklch(49.1% 0.085 182.9)
-
Step 800
800 (this color)
#04554C
oklch(40.4% 0.071 182.5)
-
Step 900
900
#184B44
oklch(37.7% 0.055 182.7)
-
Step 950
950
#102C28
oklch(27% 0.035 183.1)
#04554C 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) | #504F4C | 0.075 |
| Deuteranopia (no green cones) | #47484D | 0.072 |
| Tritanopia (no blue cones) | #005752 | 0.010 |
| Achromatopsia (no color) | #4B4B4B | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #04554C
#04554C
oklch(40.4% 0.071 182.5)
- #683845
#683845
oklch(40.5% 0.07 3.3)
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 #04554C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Green #005249 ΔE 0.011
- Deep Teal #00555A ΔE 0.024
- Dark Teal #014D4E ΔE 0.029
- Dark Slate Gray #2F4F4F ΔE 0.035
- Dark Green Blue #1F6357 ΔE 0.050
- Petrol #005F6A ΔE 0.052
- Spruce #0A5F38 ΔE 0.053
- Pine #2B5D34 ΔE 0.056
Use #04554C 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.