#00596E
Closest named color: Petrol (#005F6A). oklch(43% 0.079 221), rgb(0, 89, 110).
Aa
White text reads best on this color (7.91:1).
About this color
#00596E is a dark, moderately saturated teal or cyan. In OKLCH its lightness is 43%, its chroma 0.079 and its hue 221°. 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 7.91:1.
| Hue family | Teals and cyans |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.079) |
| Temperature | cool |
| Nearest name | Petrol (#005F6A) |
| Black text | 2.65:1 |
| White text | 7.91:1 |
Values
| HEX | #00596E |
| RGB | rgb(0, 89, 110) |
| HSL | hsl(191, 100%, 22%) |
| OKLCH | oklch(43% 0.079 221) |
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 #00596E | 7.91:1 | AAA | Lc -91.7 | Preferred for body text |
| Black text on #00596E | 2.65:1 | Fails | Lc 17.1 | Dividers and decoration only |
| #00596E text on white | 7.91:1 | AAA | Lc 86.9 | Fine for body text |
| #00596E text on black | 2.65:1 | Fails | Lc -15.2 | 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
#C8DDE5
oklch(88.4% 0.025 222.6)
-
Step 300
300
#A1C8D6
oklch(80.9% 0.046 221.7)
-
Step 400
400
#6AACC1
oklch(70.8% 0.074 220.3)
-
Step 500
500
#3B96B2
oklch(63.1% 0.094 221.8)
-
Step 600
600
#00809D
oklch(55.6% 0.102 221.1)
-
Step 700
700
#006C85
oklch(49.2% 0.09 221.2)
-
Step 800
800 (this color)
#00596E
oklch(43% 0.079 221)
-
Step 900
900
#114958
oklch(37.7% 0.061 220)
-
Step 950
950
#0D2B34
oklch(27.1% 0.039 220.8)
#00596E 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) | #4C566F | 0.063 |
| Deuteranopia (no green cones) | #3F4D6E | 0.056 |
| Tritanopia (no blue cones) | #006060 | 0.038 |
| Achromatopsia (no color) | #515151 | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #00596E
#00596E
oklch(43% 0.079 221)
- #74402C
#74402C
oklch(43.1% 0.079 41.5)
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 #00596E, 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 0.034
- Deep Sea Blue #015482 ΔE 0.041
- YInMn Blue #415A77 ΔE 0.052
- Light Navy #155084 ΔE 0.052
- Light Navy Blue #2E5A88 ΔE 0.054
- Dark Aqua #05696B ΔE 0.054
- Dark Slate Gray #2F4F4F ΔE 0.055
Use #00596E 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.