#135A56
Closest named color: Deep Teal (#00555A). oklch(42.5% 0.067 189.3), rgb(19, 90, 86).
Aa
White text reads best on this color (8.00:1).
About this color
#135A56 is a dark, muted teal or cyan. In OKLCH its lightness is 42%, its chroma 0.067 and its hue 189°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Teal (#00555A), ΔE 0.022 away. White text reads best on it, at 8.00:1.
| Hue family | Teals and cyans |
| Lightness | dark (42%) |
| Chroma | muted (0.067) |
| Temperature | cool |
| Nearest name | Deep Teal (#00555A) |
| Black text | 2.62:1 |
| White text | 8.00:1 |
Values
| HEX | #135A56 |
| RGB | rgb(19, 90, 86) |
| HSL | hsl(177, 65%, 21%) |
| OKLCH | oklch(42.5% 0.067 189.3) |
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 #135A56 | 8.00:1 | AAA | Lc -92.1 | Preferred for body text |
| Black text on #135A56 | 2.62:1 | Fails | Lc 16.6 | Dividers and decoration only |
| #135A56 text on white | 8.00:1 | AAA | Lc 87.4 | Fine for body text |
| #135A56 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
#F2F7F6
oklch(97.2% 0.005 183)
-
Step 100
100
#E2ECEB
oklch(93.5% 0.011 189.8)
-
Step 200
200
#CADEDC
oklch(88.5% 0.022 189.5)
-
Step 300
300
#A5C9C6
oklch(80.9% 0.039 190.2)
-
Step 400
400
#72AEA9
oklch(70.8% 0.063 189.2)
-
Step 500
500
#489993
oklch(63.1% 0.08 188.9)
-
Step 600
600
#22837E
oklch(55.5% 0.086 189.8)
-
Step 700
700
#116F6A
oklch(49.1% 0.081 189.2)
-
Step 800
800 (this color)
#135A56
oklch(42.5% 0.067 189.3)
-
Step 900
900
#1A4A47
oklch(37.6% 0.052 189.5)
-
Step 950
950
#112C2A
oklch(27.1% 0.033 189)
#135A56 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) | #545556 | 0.070 |
| Deuteranopia (no green cones) | #4A4D57 | 0.067 |
| Tritanopia (no blue cones) | #005D59 | 0.010 |
| Achromatopsia (no color) | #505050 | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #135A56
#135A56
oklch(42.5% 0.067 189.3)
- #6E3E46
#6E3E46
oklch(42.5% 0.068 9.6)
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 #135A56, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Teal #00555A ΔE 0.022
- Dark Green Blue #1F6357 ΔE 0.032
- Petrol #005F6A ΔE 0.032
- Dark Blue Green #005249 ΔE 0.033
- Dark Slate Gray #2F4F4F ΔE 0.037
- Dark Teal #014D4E ΔE 0.045
- Dark Aqua #05696B ΔE 0.051
- Spruce #0A5F38 ΔE 0.056
Use #135A56 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.