#659999
Closest named color: Cadet Blue (#5F9EA0). oklch(64.7% 0.055 195.9), rgb(101, 153, 153).
Aa
Black text reads best on this color (6.56:1).
About this color
#659999 is a medium-light, muted teal or cyan. In OKLCH its lightness is 65%, its chroma 0.055 and its hue 196°. Its hue sits on the cool side of the wheel. The nearest named color is Cadet Blue (#5F9EA0), ΔE 0.015 away. Black text reads best on it, at 6.56:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (65%) |
| Chroma | muted (0.055) |
| Temperature | cool |
| Nearest name | Cadet Blue (#5F9EA0) |
| Black text | 6.56:1 |
| White text | 3.19:1 |
Values
| HEX | #659999 |
| RGB | rgb(101, 153, 153) |
| HSL | hsl(180, 20%, 50%) |
| OKLCH | oklch(64.7% 0.055 195.9) |
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 #659999 | 3.19:1 | AA large text | Lc -64.5 | Content text, not long reading |
| Black text on #659999 | 6.56:1 | AA | Lc 45.0 | Non-text elements, placeholder text |
| #659999 text on white | 3.19:1 | AA large text | Lc 59.1 | Large or bold text, headings |
| #659999 text on black | 6.56:1 | AA | Lc -42.6 | 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
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E4EBEB
oklch(93.5% 0.007 197)
-
Step 200
200
#CEDCDC
oklch(88.4% 0.015 196.9)
-
Step 300
300
#ADC6C6
oklch(80.8% 0.027 196.6)
-
Step 400
400
#81A9A9
oklch(70.6% 0.043 196.2)
-
Step 500
500 (this color)
#659999
oklch(64.7% 0.055 195.9)
-
Step 600
600
#457E7F
oklch(55.5% 0.06 197)
-
Step 700
700
#376B6B
oklch(49.2% 0.056 195.5)
-
Step 800
800
#2E5757
oklch(42.7% 0.046 195.6)
-
Step 900
900
#294848
oklch(37.8% 0.037 195.7)
-
Step 950
950
#192A2A
oklch(27% 0.023 195.9)
#659999 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) | #939499 | 0.058 |
| Deuteranopia (no green cones) | #898D99 | 0.054 |
| Tritanopia (no blue cones) | #519C99 | 0.020 |
| Achromatopsia (no color) | #909090 | 0.056 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #659999
#659999
oklch(64.7% 0.055 195.9)
- #AD8183
#AD8183
oklch(64.7% 0.055 15.7)
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 #659999, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cadet Blue #5F9EA0 ΔE 0.015
- Dull Teal #5F9E8F ΔE 0.025
- Grey Teal #5E9B8A ΔE 0.027
- Sea #3C9992 ΔE 0.039
- Blue Grey #758DA3 ΔE 0.046
- Dusty Teal #4C9085 ΔE 0.047
- Greyblue #77A1B5 ΔE 0.050
- Persian Green #2A9D8F ΔE 0.052
Use #659999 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.