#18423F
Closest named color: Dark Teal (#014D4E). oklch(34.9% 0.047 188.8), rgb(24, 66, 63).
Aa
White text reads best on this color (11.11:1).
About this color
#18423F is a dark, muted teal or cyan. In OKLCH its lightness is 35%, its chroma 0.047 and its hue 189°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Teal (#014D4E), ΔE 0.038 away. White text reads best on it, at 11.11:1.
| Hue family | Teals and cyans |
| Lightness | dark (35%) |
| Chroma | muted (0.047) |
| Temperature | cool |
| Nearest name | Dark Teal (#014D4E) |
| Black text | 1.88:1 |
| White text | 11.11:1 |
Values
| HEX | #18423F |
| RGB | rgb(24, 66, 63) |
| HSL | hsl(176, 47%, 18%) |
| OKLCH | oklch(34.9% 0.047 188.8) |
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 #18423F | 11.11:1 | AAA | Lc -99.3 | Preferred for body text |
| Black text on #18423F | 1.88:1 | Fails | Lc 8.4 | Not readable |
| #18423F text on white | 11.11:1 | AAA | Lc 95.5 | Preferred for body text |
| #18423F text on black | 1.88:1 | 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 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
#CBDEDC
oklch(88.6% 0.02 189.2)
-
Step 300
300
#A8C8C5
oklch(80.8% 0.035 189.5)
-
Step 400
400
#78ACA7
oklch(70.6% 0.055 188.5)
-
Step 500
500
#519892
oklch(63.2% 0.072 188.4)
-
Step 600
600
#31827C
oklch(55.6% 0.078 188.4)
-
Step 700
700
#236E69
oklch(49.2% 0.073 188.8)
-
Step 800
800
#1F5A56
oklch(42.8% 0.061 188.9)
-
Step 900
900 (this color)
#18423F
oklch(34.9% 0.047 188.8)
-
Step 950
950
#142B29
oklch(26.9% 0.029 188.3)
#18423F 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) | #3E3E3F | 0.050 |
| Deuteranopia (no green cones) | #38393F | 0.048 |
| Tritanopia (no blue cones) | #004441 | 0.014 |
| Achromatopsia (no color) | #3C3C3C | 0.047 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #18423F
#18423F
oklch(34.9% 0.047 188.8)
- #4F3035
#4F3035
oklch(34.9% 0.046 9.2)
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 #18423F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Teal #014D4E ΔE 0.038
- Charcoal #264653 ΔE 0.039
- Midnight Green #073B4C ΔE 0.040
- Dark Blue Grey #1F3B4D ΔE 0.040
- Onyx #343A40 ΔE 0.042
- Charcoal Grey #3C4142 ΔE 0.046
- Evergreen #05472A ΔE 0.047
- Dark Blue Green #005249 ΔE 0.051
Use #18423F 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.