#1BBCAA
Closest named color: Topaz (#13BBAF). oklch(71.6% 0.124 182.6), rgb(27, 188, 170).
Aa
Black text reads best on this color (8.82:1).
About this color
#1BBCAA is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 72%, its chroma 0.124 and its hue 183°. Its hue sits on the cool side of the wheel. The nearest named color is Topaz (#13BBAF), ΔE 0.009 away. Black text reads best on it, at 8.82:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (72%) |
| Chroma | moderately saturated (0.124) |
| Temperature | cool |
| Nearest name | Topaz (#13BBAF) |
| Black text | 8.82:1 |
| White text | 2.38:1 |
Values
| HEX | #1BBCAA |
| RGB | rgb(27, 188, 170) |
| HSL | hsl(173, 75%, 42%) |
| OKLCH | oklch(71.6% 0.124 182.6) |
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 #1BBCAA | 2.38:1 | Fails | Lc -51.3 | Large or bold text, headings |
| Black text on #1BBCAA | 8.82:1 | AAA | Lc 57.6 | Large or bold text, headings |
| #1BBCAA text on white | 2.38:1 | Fails | Lc 46.4 | Large or bold text, headings |
| #1BBCAA text on black | 8.82:1 | AAA | Lc -55.7 | Large or bold text, headings |
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 400.
-
Step 50
50
#EEF8F6
oklch(97.1% 0.011 182.9)
-
Step 100
100
#DBEFEB
oklch(93.6% 0.022 182.5)
-
Step 200
200
#BBE3DB
oklch(88.5% 0.043 181.8)
-
Step 300
300
#86D1C5
oklch(80.8% 0.077 183.1)
-
Step 400
400 (this color)
#1BBCAA
oklch(71.6% 0.124 182.6)
-
Step 500
500
#009F8F
oklch(63.1% 0.113 182.5)
-
Step 600
600
#008678
oklch(55.6% 0.1 182.2)
-
Step 700
700
#007165
oklch(49.2% 0.088 182.2)
-
Step 800
800
#005C53
oklch(42.6% 0.076 183.4)
-
Step 900
900
#004D45
oklch(37.7% 0.067 183.1)
-
Step 950
950
#002E28
oklch(27% 0.049 181.5)
#1BBCAA 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) | #B3B0A9 | 0.132 |
| Deuteranopia (no green cones) | #9FA2AC | 0.125 |
| Tritanopia (no blue cones) | #00C0B6 | 0.017 |
| Achromatopsia (no color) | #A8A8A8 | 0.125 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1BBCAA
#1BBCAA
oklch(71.6% 0.124 182.6)
- #E3819C
#E3819C
oklch(71.7% 0.124 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 #1BBCAA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Topaz #13BBAF ΔE 0.009
- Light Sea Green #20B2AA ΔE 0.029
- Greeny Blue #42B395 ΔE 0.033
- Green Blue #01C08D ΔE 0.048
- Greenblue #23C48B ΔE 0.056
- Turquoise Blue #06B1C4 ΔE 0.058
- Dark Turquoise #00CED1 ΔE 0.065
- Dark Seafoam #1FB57A ΔE 0.065
Use #1BBCAA 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.