#143733
Closest named color: Midnight Green (#073B4C). oklch(31% 0.041 185.3), rgb(20, 55, 51).
Aa
White text reads best on this color (12.93:1).
About this color
#143733 is a dark, muted teal or cyan. In OKLCH its lightness is 31%, its chroma 0.041 and its hue 185°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Green (#073B4C), ΔE 0.043 away. White text reads best on it, at 12.93:1.
| Hue family | Teals and cyans |
| Lightness | dark (31%) |
| Chroma | muted (0.041) |
| Temperature | cool |
| Nearest name | Midnight Green (#073B4C) |
| Black text | 1.62:1 |
| White text | 12.93:1 |
Values
| HEX | #143733 |
| RGB | rgb(20, 55, 51) |
| HSL | hsl(173, 47%, 15%) |
| OKLCH | oklch(31% 0.041 185.3) |
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 #143733 | 12.93:1 | AAA | Lc -102.3 | Preferred for body text |
| Black text on #143733 | 1.62:1 | Fails | Lc 0.0 | Not readable |
| #143733 text on white | 12.93:1 | AAA | Lc 99.0 | Preferred for body text |
| #143733 text on black | 1.62:1 | Fails | Lc 0.0 | Not readable |
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 950.
-
Step 50
50
#F1F7F6
oklch(97.1% 0.006 185.3)
-
Step 100
100
#E0EDEB
oklch(93.6% 0.014 185.9)
-
Step 200
200
#C6DFDB
oklch(88.4% 0.027 185.1)
-
Step 300
300
#9ECBC5
oklch(80.8% 0.048 186.2)
-
Step 400
400
#64B1A7
oklch(70.8% 0.078 184.9)
-
Step 500
500
#2C9D92
oklch(63.2% 0.099 185.4)
-
Step 600
600
#00857B
oklch(55.5% 0.097 185.6)
-
Step 700
700
#007067
oklch(49% 0.086 185.2)
-
Step 800
800
#005C55
oklch(42.7% 0.075 185.9)
-
Step 900
900
#044D46
oklch(37.8% 0.065 184.3)
-
Step 950
950 (this color)
#143733
oklch(31% 0.041 185.3)
#143733 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) | #343433 | 0.043 |
| Deuteranopia (no green cones) | #2F3033 | 0.041 |
| Tritanopia (no blue cones) | #003836 | 0.013 |
| Achromatopsia (no color) | #313131 | 0.041 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #143733
#143733
oklch(31% 0.041 185.3)
- #42272D
#42272D
oklch(30.9% 0.042 5.3)
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 #143733, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Green #073B4C ΔE 0.043
- Gunmetal #293241 ΔE 0.045
- Pakistan Green #283618 ΔE 0.045
- Dark Blue Grey #1F3B4D ΔE 0.049
- Onyx #343A40 ΔE 0.051
- Space Cadet #2B2D42 ΔE 0.058
- Jet #212529 ΔE 0.061
- Evergreen #05472A ΔE 0.063
Use #143733 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.