#18595D
Closest named color: Deep Teal (#00555A). oklch(42.6% 0.063 201.1), rgb(24, 89, 93).
Aa
White text reads best on this color (7.99:1).
About this color
#18595D is a dark, muted teal or cyan. In OKLCH its lightness is 43%, its chroma 0.063 and its hue 201°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Teal (#00555A), ΔE 0.018 away. White text reads best on it, at 7.99:1.
| Hue family | Teals and cyans |
| Lightness | dark (43%) |
| Chroma | muted (0.063) |
| Temperature | cool |
| Nearest name | Deep Teal (#00555A) |
| Black text | 2.62:1 |
| White text | 7.99:1 |
Values
| HEX | #18595D |
| RGB | rgb(24, 89, 93) |
| HSL | hsl(183, 59%, 23%) |
| OKLCH | oklch(42.6% 0.063 201.1) |
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 #18595D | 7.99:1 | AAA | Lc -92.1 | Preferred for body text |
| Black text on #18595D | 2.62:1 | Fails | Lc 16.6 | Dividers and decoration only |
| #18595D text on white | 7.99:1 | AAA | Lc 87.4 | Fine for body text |
| #18595D text on black | 2.62:1 | Fails | Lc -14.7 | 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 800.
-
Step 50
50
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E2ECED
oklch(93.6% 0.011 204.1)
-
Step 200
200
#CADDDF
oklch(88.4% 0.021 204.4)
-
Step 300
300
#A6C8CA
oklch(80.9% 0.036 200.9)
-
Step 400
400
#73ACB0
oklch(70.7% 0.06 201.5)
-
Step 500
500
#4B979C
oklch(63% 0.075 201.1)
-
Step 600
600
#288287
oklch(55.7% 0.082 200.5)
-
Step 700
700
#186D73
oklch(49% 0.076 202.2)
-
Step 800
800 (this color)
#18595D
oklch(42.6% 0.063 201.1)
-
Step 900
900
#1C494C
oklch(37.6% 0.049 201.3)
-
Step 950
950
#122B2D
oklch(27% 0.031 202.3)
#18595D 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) | #52555D | 0.064 |
| Deuteranopia (no green cones) | #484D5D | 0.060 |
| Tritanopia (no blue cones) | #005D5A | 0.017 |
| Achromatopsia (no color) | #515151 | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #18595D
#18595D
oklch(42.6% 0.063 201.1)
- #6D4040
#6D4040
oklch(42.5% 0.063 20)
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 #18595D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Teal #00555A ΔE 0.018
- Petrol #005F6A ΔE 0.024
- Dark Slate Gray #2F4F4F ΔE 0.035
- Dark Green Blue #1F6357 ΔE 0.038
- Dark Blue Green #005249 ΔE 0.040
- Dark Teal #014D4E ΔE 0.045
- Dark Aqua #05696B ΔE 0.050
- Charcoal #264653 ΔE 0.059
Use #18595D 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.