#55979F
Closest named color: Cadet Blue (#5F9EA0). oklch(63.6% 0.068 205.7), rgb(85, 151, 159).
Aa
Black text reads best on this color (6.31:1).
About this color
#55979F is a medium-light, muted teal or cyan. In OKLCH its lightness is 64%, its chroma 0.068 and its hue 206°. Its hue sits on the cool side of the wheel. The nearest named color is Cadet Blue (#5F9EA0), ΔE 0.024 away. Black text reads best on it, at 6.31:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (64%) |
| Chroma | muted (0.068) |
| Temperature | cool |
| Nearest name | Cadet Blue (#5F9EA0) |
| Black text | 6.31:1 |
| White text | 3.32:1 |
Values
| HEX | #55979F |
| RGB | rgb(85, 151, 159) |
| HSL | hsl(186, 30%, 48%) |
| OKLCH | oklch(63.6% 0.068 205.7) |
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 #55979F | 3.32:1 | AA large text | Lc -66.0 | Content text, not long reading |
| Black text on #55979F | 6.31:1 | AA | Lc 43.5 | Non-text elements, placeholder text |
| #55979F text on white | 3.32:1 | AA large text | Lc 60.5 | Content text, not long reading |
| #55979F text on black | 6.31:1 | AA | Lc -41.2 | 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
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E3ECED
oklch(93.7% 0.01 204.9)
-
Step 200
200
#CCDDDF
oklch(88.5% 0.018 205.3)
-
Step 300
300
#A9C7CB
oklch(80.9% 0.033 206.4)
-
Step 400
400
#79ABB1
oklch(70.8% 0.054 205.4)
-
Step 500
500 (this color)
#55979F
oklch(63.6% 0.068 205.7)
-
Step 600
600
#358088
oklch(55.6% 0.074 204.9)
-
Step 700
700
#266C74
oklch(49.1% 0.069 205.8)
-
Step 800
800
#22585E
oklch(42.7% 0.057 205.3)
-
Step 900
900
#22484D
oklch(37.6% 0.044 206.7)
-
Step 950
950
#152A2D
oklch(26.9% 0.027 207.4)
#55979F 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) | #8E92A0 | 0.068 |
| Deuteranopia (no green cones) | #81899F | 0.062 |
| Tritanopia (no blue cones) | #2F9C99 | 0.033 |
| Achromatopsia (no color) | #8D8D8D | 0.069 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #55979F
#55979F
oklch(63.6% 0.068 205.7)
- #B17B75
#B17B75
oklch(63.6% 0.069 26.2)
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 #55979F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cadet Blue #5F9EA0 ΔE 0.024
- Sea #3C9992 ΔE 0.032
- Grey Teal #5E9B8A ΔE 0.038
- Dull Teal #5F9E8F ΔE 0.038
- Dusty Teal #4C9085 ΔE 0.042
- Blue Grey #758DA3 ΔE 0.045
- Persian Green #2A9D8F ΔE 0.047
- Teal Green #0A9396 ΔE 0.048
Use #55979F 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.