#136B74
Closest named color: Dark Aqua (#05696B). oklch(48.4% 0.078 205.7), rgb(19, 107, 116).
Aa
White text reads best on this color (6.20:1).
About this color
#136B74 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 48%, its chroma 0.078 and its hue 206°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Aqua (#05696B), ΔE 0.016 away. White text reads best on it, at 6.20:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.078) |
| Temperature | cool |
| Nearest name | Dark Aqua (#05696B) |
| Black text | 3.38:1 |
| White text | 6.20:1 |
Values
| HEX | #136B74 |
| RGB | rgb(19, 107, 116) |
| HSL | hsl(186, 72%, 26%) |
| OKLCH | oklch(48.4% 0.078 205.7) |
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 #136B74 | 6.20:1 | AA | Lc -85.7 | Fine for body text |
| Black text on #136B74 | 3.38:1 | AA large text | Lc 23.5 | Dividers and decoration only |
| #136B74 text on white | 6.20:1 | AA | Lc 80.6 | Fine for body text |
| #136B74 text on black | 3.38:1 | AA large text | Lc -21.3 | 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
#CADDE0
oklch(88.4% 0.021 208.1)
-
Step 300
300
#A5C8CC
oklch(80.9% 0.038 205)
-
Step 400
400
#73ACB3
oklch(70.8% 0.06 205.6)
-
Step 500
500
#4A97A0
oklch(63.1% 0.077 205.5)
-
Step 600
600
#26818B
oklch(55.6% 0.084 205.8)
-
Step 700
700 (this color)
#136B74
oklch(48.4% 0.078 205.7)
-
Step 800
800
#175960
oklch(42.7% 0.064 205.4)
-
Step 900
900
#1B494E
oklch(37.6% 0.05 205.1)
-
Step 950
950
#122B2E
oklch(27.1% 0.031 205.7)
#136B74 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) | #616675 | 0.076 |
| Deuteranopia (no green cones) | #545D74 | 0.069 |
| Tritanopia (no blue cones) | #00706E | 0.022 |
| Achromatopsia (no color) | #616161 | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #136B74
#136B74
oklch(48.4% 0.078 205.7)
- #854D48
#854D48
oklch(48.4% 0.077 25.7)
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 #136B74, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Aqua #05696B ΔE 0.016
- Deep Turquoise #017374 ΔE 0.025
- Dark Aquamarine #017371 ΔE 0.027
- Deep Aqua #08787F ΔE 0.040
- Petrol #005F6A ΔE 0.040
- Bluegreen #017A79 ΔE 0.046
- Dark Green Blue #1F6357 ΔE 0.046
- Sea Blue #047495 ΔE 0.053
Use #136B74 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.