#04586B
Closest named color: Petrol (#005F6A). oklch(42.6% 0.076 219.4), rgb(4, 88, 107).
Aa
White text reads best on this color (8.03:1).
About this color
#04586B is a dark, moderately saturated teal or cyan. In OKLCH its lightness is 43%, its chroma 0.076 and its hue 219°. Its hue sits on the cool side of the wheel. The nearest named color is Petrol (#005F6A), ΔE 0.023 away. White text reads best on it, at 8.03:1.
| Hue family | Teals and cyans |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.076) |
| Temperature | cool |
| Nearest name | Petrol (#005F6A) |
| Black text | 2.61:1 |
| White text | 8.03:1 |
Values
| HEX | #04586B |
| RGB | rgb(4, 88, 107) |
| HSL | hsl(191, 93%, 22%) |
| OKLCH | oklch(42.6% 0.076 219.4) |
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 #04586B | 8.03:1 | AAA | Lc -92.1 | Preferred for body text |
| Black text on #04586B | 2.61:1 | Fails | Lc 16.6 | Dividers and decoration only |
| #04586B text on white | 8.03:1 | AAA | Lc 87.4 | Fine for body text |
| #04586B text on black | 2.61:1 | Fails | Lc -14.7 | 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
#F1F6F8
oklch(97% 0.006 223.5)
-
Step 100
100
#E1ECF0
oklch(93.6% 0.013 221.4)
-
Step 200
200
#C8DDE4
oklch(88.4% 0.024 219.7)
-
Step 300
300
#A2C8D4
oklch(80.9% 0.044 219)
-
Step 400
400
#6CABBF
oklch(70.6% 0.071 220.1)
-
Step 500
500
#3E96AF
oklch(63% 0.091 219.7)
-
Step 600
600
#0B809B
oklch(55.6% 0.099 220)
-
Step 700
700
#006C83
oklch(49.1% 0.089 219.3)
-
Step 800
800 (this color)
#04586B
oklch(42.6% 0.076 219.4)
-
Step 900
900
#134957
oklch(37.8% 0.059 218.9)
-
Step 950
950
#0E2B33
oklch(27.1% 0.037 218.8)
#04586B 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) | #4C556C | 0.063 |
| Deuteranopia (no green cones) | #404C6B | 0.057 |
| Tritanopia (no blue cones) | #005E5E | 0.034 |
| Achromatopsia (no color) | #505050 | 0.076 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #04586B
#04586B
oklch(42.6% 0.076 219.4)
- #723F2E
#723F2E
oklch(42.6% 0.077 39.1)
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 #04586B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Petrol #005F6A ΔE 0.023
- Deep Teal #00555A ΔE 0.029
- Deep Sea Blue #015482 ΔE 0.044
- Dark Slate Gray #2F4F4F ΔE 0.050
- YInMn Blue #415A77 ΔE 0.054
- Dark Teal #014D4E ΔE 0.054
- Light Navy #155084 ΔE 0.055
- Dark Aqua #05696B ΔE 0.056
Use #04586B 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.