#00596B
Closest named color: Petrol (#005F6A). oklch(42.8% 0.077 217.7), rgb(0, 89, 107).
Aa
White text reads best on this color (7.95:1).
About this color
#00596B is a dark, moderately saturated teal or cyan. In OKLCH its lightness is 43%, its chroma 0.077 and its hue 218°. Its hue sits on the cool side of the wheel. The nearest named color is Petrol (#005F6A), ΔE 0.020 away. White text reads best on it, at 7.95:1.
| Hue family | Teals and cyans |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.077) |
| Temperature | cool |
| Nearest name | Petrol (#005F6A) |
| Black text | 2.64:1 |
| White text | 7.95:1 |
Values
| HEX | #00596B |
| RGB | rgb(0, 89, 107) |
| HSL | hsl(190, 100%, 21%) |
| OKLCH | oklch(42.8% 0.077 217.7) |
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 #00596B | 7.95:1 | AAA | Lc -91.8 | Preferred for body text |
| Black text on #00596B | 2.64:1 | Fails | Lc 17.0 | Dividers and decoration only |
| #00596B text on white | 7.95:1 | AAA | Lc 87.1 | Fine for body text |
| #00596B text on black | 2.64:1 | Fails | Lc -15.1 | 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
#F1F6F8
oklch(97% 0.006 223.5)
-
Step 100
100
#E1ECF0
oklch(93.6% 0.013 221.4)
-
Step 200
200
#C8DEE4
oklch(88.6% 0.025 215.9)
-
Step 300
300
#A1C8D4
oklch(80.9% 0.045 218.5)
-
Step 400
400
#6BACBE
oklch(70.7% 0.071 217.4)
-
Step 500
500
#3B97AE
oklch(63.1% 0.092 217.3)
-
Step 600
600
#00819A
oklch(55.7% 0.1 217.7)
-
Step 700
700
#006C82
oklch(49.1% 0.088 218.4)
-
Step 800
800 (this color)
#00596B
oklch(42.8% 0.077 217.7)
-
Step 900
900
#114957
oklch(37.7% 0.06 218.5)
-
Step 950
950
#0D2B33
oklch(27.1% 0.038 218.3)
#00596B 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) | #4D566C | 0.065 |
| Deuteranopia (no green cones) | #414D6B | 0.059 |
| Tritanopia (no blue cones) | #005F5F | 0.032 |
| Achromatopsia (no color) | #515151 | 0.077 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #00596B
#00596B
oklch(42.8% 0.077 217.7)
- #733F2F
#733F2F
oklch(42.8% 0.077 37.9)
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 #00596B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Petrol #005F6A ΔE 0.020
- Deep Teal #00555A ΔE 0.029
- Deep Sea Blue #015482 ΔE 0.046
- Dark Slate Gray #2F4F4F ΔE 0.051
- Dark Aqua #05696B ΔE 0.053
- YInMn Blue #415A77 ΔE 0.055
- Dark Teal #014D4E ΔE 0.055
- Dark Green Blue #1F6357 ΔE 0.055
Use #00596B 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.