#1D4342
Closest named color: Charcoal (#264653). oklch(35.5% 0.043 193.1), rgb(29, 67, 66).
Aa
White text reads best on this color (10.85:1).
About this color
#1D4342 is a dark, muted teal or cyan. In OKLCH its lightness is 35%, its chroma 0.043 and its hue 193°. Its hue sits on the cool side of the wheel. The nearest named color is Charcoal (#264653), ΔE 0.032 away. White text reads best on it, at 10.85:1.
| Hue family | Teals and cyans |
| Lightness | dark (35%) |
| Chroma | muted (0.043) |
| Temperature | cool |
| Nearest name | Charcoal (#264653) |
| Black text | 1.93:1 |
| White text | 10.85:1 |
Values
| HEX | #1D4342 |
| RGB | rgb(29, 67, 66) |
| HSL | hsl(178, 40%, 19%) |
| OKLCH | oklch(35.5% 0.043 193.1) |
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 #1D4342 | 10.85:1 | AAA | Lc -98.9 | Preferred for body text |
| Black text on #1D4342 | 1.93:1 | Fails | Lc 8.9 | Not readable |
| #1D4342 text on white | 10.85:1 | AAA | Lc 95.0 | Preferred for body text |
| #1D4342 text on black | 1.93:1 | Fails | Lc -7.6 | 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 900.
-
Step 50
50
#F2F6F6
oklch(97% 0.004 197.1)
-
Step 100
100
#E3ECEB
oklch(93.6% 0.01 189.1)
-
Step 200
200
#CCDDDC
oklch(88.4% 0.018 192.6)
-
Step 300
300
#A9C8C6
oklch(80.9% 0.033 191.7)
-
Step 400
400
#7AABA9
oklch(70.6% 0.052 192.9)
-
Step 500
500
#569694
oklch(63% 0.066 193)
-
Step 600
600
#38817F
oklch(55.7% 0.072 192.8)
-
Step 700
700
#2A6D6B
oklch(49.2% 0.067 192.5)
-
Step 800
800
#245957
oklch(42.8% 0.056 191.9)
-
Step 900
900 (this color)
#1D4342
oklch(35.5% 0.043 193.1)
-
Step 950
950
#152B2A
oklch(27% 0.028 191.9)
#1D4342 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) | #3F4042 | 0.045 |
| Deuteranopia (no green cones) | #393B42 | 0.043 |
| Tritanopia (no blue cones) | #054543 | 0.015 |
| Achromatopsia (no color) | #3D3D3D | 0.044 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1D4342
#1D4342
oklch(35.5% 0.043 193.1)
- #503235
#503235
oklch(35.4% 0.044 13)
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 #1D4342, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal #264653 ΔE 0.032
- Dark Teal #014D4E ΔE 0.034
- Dark Blue Grey #1F3B4D ΔE 0.038
- Onyx #343A40 ΔE 0.039
- Charcoal Grey #3C4142 ΔE 0.040
- Midnight Green #073B4C ΔE 0.041
- Dark Grey Blue #29465B ΔE 0.047
- Dark Blue Green #005249 ΔE 0.048
Use #1D4342 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.