#559E8A
Closest named color: Grey Teal (#5E9B8A). oklch(64.6% 0.08 173.9), rgb(85, 158, 138).
Aa
Black text reads best on this color (6.64:1).
About this color
#559E8A is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 65%, its chroma 0.080 and its hue 174°. Its hue sits on the cool side of the wheel. The nearest named color is Grey Teal (#5E9B8A), ΔE 0.012 away. Black text reads best on it, at 6.64:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (65%) |
| Chroma | moderately saturated (0.080) |
| Temperature | cool |
| Nearest name | Grey Teal (#5E9B8A) |
| Black text | 6.64:1 |
| White text | 3.16:1 |
Values
| HEX | #559E8A |
| RGB | rgb(85, 158, 138) |
| HSL | hsl(164, 30%, 48%) |
| OKLCH | oklch(64.6% 0.08 173.9) |
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 #559E8A | 3.16:1 | AA large text | Lc -64.0 | Content text, not long reading |
| Black text on #559E8A | 6.64:1 | AA | Lc 45.5 | Large or bold text, headings |
| #559E8A text on white | 3.16:1 | AA large text | Lc 58.6 | Large or bold text, headings |
| #559E8A text on black | 6.64:1 | AA | Lc -43.2 | 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
#F2F7F5
oklch(97.2% 0.006 170.4)
-
Step 100
100
#E3ECE9
oklch(93.5% 0.01 174.3)
-
Step 200
200
#CBDED8
oklch(88.5% 0.022 174.9)
-
Step 300
300
#A8C9BE
oklch(80.8% 0.039 173.1)
-
Step 400
400
#77AE9D
oklch(70.7% 0.063 173.1)
-
Step 500
500 (this color)
#559E8A
oklch(64.6% 0.08 173.9)
-
Step 600
600
#30846F
oklch(55.7% 0.087 173.5)
-
Step 700
700
#216F5D
oklch(49% 0.08 174.3)
-
Step 800
800
#1E5B4C
oklch(42.7% 0.067 173.7)
-
Step 900
900
#204B3F
oklch(37.8% 0.053 172.7)
-
Step 950
950
#142C25
oklch(27.1% 0.033 172.8)
#559E8A 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) | #9A9689 | 0.084 |
| Deuteranopia (no green cones) | #8E8D8B | 0.080 |
| Tritanopia (no blue cones) | #3A9F98 | 0.026 |
| Achromatopsia (no color) | #919191 | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #559E8A
#559E8A
oklch(64.6% 0.08 173.9)
- #B57A91
#B57A91
oklch(64.7% 0.079 354.5)
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 #559E8A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grey Teal #5E9B8A ΔE 0.012
- Dull Teal #5F9E8F ΔE 0.013
- Sea #3C9992 ΔE 0.030
- Persian Green #2A9D8F ΔE 0.030
- Cadet Blue #5F9EA0 ΔE 0.036
- Blue Green #0F9B8E ΔE 0.041
- Ocean Green #3D9973 ΔE 0.042
- Dusty Teal #4C9085 ΔE 0.043
Use #559E8A 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.