#42736C
Closest named color: Dark Aquamarine (#017371). oklch(51.9% 0.055 184.1), rgb(66, 115, 108).
Aa
White text reads best on this color (5.38:1).
About this color
#42736C is a medium-dark, muted teal or cyan. In OKLCH its lightness is 52%, its chroma 0.055 and its hue 184°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Aquamarine (#017371), ΔE 0.037 away. White text reads best on it, at 5.38:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (52%) |
| Chroma | muted (0.055) |
| Temperature | cool |
| Nearest name | Dark Aquamarine (#017371) |
| Black text | 3.90:1 |
| White text | 5.38:1 |
Values
| HEX | #42736C |
| RGB | rgb(66, 115, 108) |
| HSL | hsl(171, 27%, 35%) |
| OKLCH | oklch(51.9% 0.055 184.1) |
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 #42736C | 5.38:1 | AA | Lc -82.1 | Fine for body text |
| Black text on #42736C | 3.90:1 | AA large text | Lc 27.3 | Dividers and decoration only |
| #42736C text on white | 5.38:1 | AA | Lc 76.7 | Fine for body text |
| #42736C text on black | 3.90:1 | AA large text | Lc -25.0 | 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 700.
-
Step 50
50
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E5ECEA
oklch(93.7% 0.008 177.3)
-
Step 200
200
#CFDCDA
oklch(88.4% 0.014 185.9)
-
Step 300
300
#AFC6C2
oklch(80.8% 0.026 184.1)
-
Step 400
400
#84AAA3
oklch(70.8% 0.043 182.5)
-
Step 500
500
#63948D
oklch(63% 0.054 184.7)
-
Step 600
600
#497F77
oklch(55.6% 0.059 183.6)
-
Step 700
700 (this color)
#42736C
oklch(51.9% 0.055 184.1)
-
Step 800
800
#315752
oklch(42.7% 0.044 185)
-
Step 900
900
#2B4844
oklch(37.7% 0.036 184.8)
-
Step 950
950
#1A2A28
oklch(27% 0.022 186.2)
#42736C 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) | #6F6E6C | 0.059 |
| Deuteranopia (no green cones) | #66686D | 0.054 |
| Tritanopia (no blue cones) | #2F7571 | 0.017 |
| Achromatopsia (no color) | #6A6A6A | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #42736C
#42736C
oklch(51.9% 0.055 184.1)
- #845B65
#845B65
oklch(51.8% 0.056 3.2)
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 #42736C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Aquamarine #017371 ΔE 0.037
- Deep Turquoise #017374 ΔE 0.037
- Bluegreen #017A79 ΔE 0.037
- Deep Aqua #08787F ΔE 0.039
- Teal #008080 ΔE 0.047
- Slate #516572 ΔE 0.049
- Dark Aqua #05696B ΔE 0.054
- Dim Gray #696969 ΔE 0.055
Use #42736C 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.