#559990
Closest named color: Grey Teal (#5E9B8A). oklch(63.5% 0.071 184.7), rgb(85, 153, 144).
Aa
Black text reads best on this color (6.34:1).
About this color
#559990 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 64%, its chroma 0.071 and its hue 185°. Its hue sits on the cool side of the wheel. The nearest named color is Grey Teal (#5E9B8A), ΔE 0.015 away. Black text reads best on it, at 6.34:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (64%) |
| Chroma | moderately saturated (0.071) |
| Temperature | cool |
| Nearest name | Grey Teal (#5E9B8A) |
| Black text | 6.34:1 |
| White text | 3.30:1 |
Values
| HEX | #559990 |
| RGB | rgb(85, 153, 144) |
| HSL | hsl(172, 29%, 47%) |
| OKLCH | oklch(63.5% 0.071 184.7) |
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 #559990 | 3.30:1 | AA large text | Lc -65.8 | Content text, not long reading |
| Black text on #559990 | 6.34:1 | AA | Lc 43.7 | Non-text elements, placeholder text |
| #559990 text on white | 3.30:1 | AA large text | Lc 60.4 | Content text, not long reading |
| #559990 text on black | 6.34:1 | AA | Lc -41.4 | Non-text elements, placeholder text |
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 500.
-
Step 50
50
#F2F6F6
oklch(97% 0.004 197.1)
-
Step 100
100
#E3ECEA
oklch(93.6% 0.01 181.4)
-
Step 200
200
#CCDDDB
oklch(88.4% 0.018 188.3)
-
Step 300
300
#A9C8C3
oklch(80.8% 0.034 184.7)
-
Step 400
400
#79ACA5
oklch(70.6% 0.055 185.4)
-
Step 500
500 (this color)
#559990
oklch(63.5% 0.071 184.7)
-
Step 600
600
#358279
oklch(55.6% 0.077 184.8)
-
Step 700
700
#266E66
oklch(49.1% 0.072 184.9)
-
Step 800
800
#225A53
oklch(42.8% 0.06 184.1)
-
Step 900
900
#224A45
oklch(37.8% 0.046 184.8)
-
Step 950
950
#152B28
oklch(27% 0.029 184.5)
#559990 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) | #939290 | 0.076 |
| Deuteranopia (no green cones) | #878A91 | 0.070 |
| Tritanopia (no blue cones) | #389C96 | 0.022 |
| Achromatopsia (no color) | #8D8D8D | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #559990
#559990
oklch(63.5% 0.071 184.7)
- #B07985
#B07985
oklch(63.6% 0.07 4.9)
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 #559990, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grey Teal #5E9B8A ΔE 0.015
- Dull Teal #5F9E8F ΔE 0.019
- Sea #3C9992 ΔE 0.020
- Cadet Blue #5F9EA0 ΔE 0.028
- Dusty Teal #4C9085 ΔE 0.030
- Persian Green #2A9D8F ΔE 0.031
- Blue Green #0F9B8E ΔE 0.039
- Teal Green #0A9396 ΔE 0.048
Use #559990 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.