#18757B
Closest named color: Deep Aqua (#08787F). oklch(51.5% 0.081 201.6), rgb(24, 117, 123).
Aa
White text reads best on this color (5.42:1).
About this color
#18757B is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 51%, its chroma 0.081 and its hue 202°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Aqua (#08787F), ΔE 0.010 away. White text reads best on it, at 5.42:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.081) |
| Temperature | cool |
| Nearest name | Deep Aqua (#08787F) |
| Black text | 3.86:1 |
| White text | 5.42:1 |
Values
| HEX | #18757B |
| RGB | rgb(24, 117, 123) |
| HSL | hsl(184, 67%, 29%) |
| OKLCH | oklch(51.5% 0.081 201.6) |
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 #18757B | 5.42:1 | AA | Lc -82.0 | Fine for body text |
| Black text on #18757B | 3.86:1 | AA large text | Lc 27.4 | Dividers and decoration only |
| #18757B text on white | 5.42:1 | AA | Lc 76.7 | Fine for body text |
| #18757B text on black | 3.86:1 | 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
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E2ECED
oklch(93.6% 0.011 204.1)
-
Step 200
200
#C9DEDF
oklch(88.5% 0.022 200.2)
-
Step 300
300
#A4C9CB
oklch(81% 0.039 200.5)
-
Step 400
400
#70ADB1
oklch(70.8% 0.063 201.1)
-
Step 500
500
#45989E
oklch(63.1% 0.08 201.7)
-
Step 600
600
#1D8289
oklch(55.5% 0.087 202.1)
-
Step 700
700 (this color)
#18757B
oklch(51.5% 0.081 201.6)
-
Step 800
800
#105A5E
oklch(42.8% 0.068 200.6)
-
Step 900
900
#184A4D
oklch(37.7% 0.053 200.8)
-
Step 950
950
#102B2D
oklch(26.9% 0.033 201.9)
#18757B 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) | #6B707B | 0.081 |
| Deuteranopia (no green cones) | #5E667B | 0.075 |
| Tritanopia (no blue cones) | #007A77 | 0.019 |
| Achromatopsia (no color) | #6A6A6A | 0.082 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #18757B
#18757B
oklch(51.5% 0.081 201.6)
- #905452
#905452
oklch(51.4% 0.08 22.3)
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 #18757B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Aqua #08787F ΔE 0.010
- Deep Turquoise #017374 ΔE 0.015
- Bluegreen #017A79 ΔE 0.017
- Dark Aquamarine #017371 ΔE 0.019
- Teal #008080 ΔE 0.032
- Ocean #017B92 ΔE 0.036
- Dark Aqua #05696B ΔE 0.042
- Sea Blue #047495 ΔE 0.043
Use #18757B 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.