#42736E
Closest named color: Dark Aquamarine (#017371). oklch(51.9% 0.054 187.3), rgb(66, 115, 110).
Aa
White text reads best on this color (5.37:1).
About this color
#42736E is a medium-dark, muted teal or cyan. In OKLCH its lightness is 52%, its chroma 0.054 and its hue 187°. 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 5.37:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (52%) |
| Chroma | muted (0.054) |
| Temperature | cool |
| Nearest name | Dark Aquamarine (#017371) |
| Black text | 3.90:1 |
| White text | 5.37:1 |
Values
| HEX | #42736E |
| RGB | rgb(66, 115, 110) |
| HSL | hsl(174, 27%, 35%) |
| OKLCH | oklch(51.9% 0.054 187.3) |
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 #42736E | 5.37:1 | AA | Lc -82.0 | Fine for body text |
| Black text on #42736E | 3.90:1 | AA large text | Lc 27.4 | Dividers and decoration only |
| #42736E text on white | 5.37:1 | AA | Lc 76.7 | Fine for body text |
| #42736E text on black | 3.90:1 | AA large text | Lc -25.1 | 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
#E5EBEB
oklch(93.6% 0.006 197)
-
Step 200
200
#CFDCDB
oklch(88.4% 0.014 191.4)
-
Step 300
300
#AFC6C3
oklch(80.8% 0.025 187.2)
-
Step 400
400
#83A9A5
oklch(70.6% 0.042 188.3)
-
Step 500
500
#63948F
oklch(63% 0.053 187.9)
-
Step 600
600
#497F79
oklch(55.7% 0.059 186.5)
-
Step 700
700 (this color)
#42736E
oklch(51.9% 0.054 187.3)
-
Step 800
800
#305753
oklch(42.7% 0.045 187.2)
-
Step 900
900
#2B4845
oklch(37.8% 0.035 187.5)
-
Step 950
950
#1A2A28
oklch(27% 0.022 186.2)
#42736E 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) | #6E6E6E | 0.057 |
| Deuteranopia (no green cones) | #66686F | 0.054 |
| Tritanopia (no blue cones) | #2E7571 | 0.017 |
| Achromatopsia (no color) | #6A6A6A | 0.054 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #42736E
#42736E
oklch(51.9% 0.054 187.3)
- #845C63
#845C63
oklch(51.9% 0.053 7.5)
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 #42736E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Aquamarine #017371 ΔE 0.037
- Bluegreen #017A79 ΔE 0.037
- Deep Turquoise #017374 ΔE 0.037
- Deep Aqua #08787F ΔE 0.038
- Teal #008080 ΔE 0.046
- Slate #516572 ΔE 0.048
- Dark Aqua #05696B ΔE 0.054
- Dim Gray #696969 ΔE 0.054
Use #42736E 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.