#45C1B0
Closest named color: Topaz (#13BBAF). oklch(73.8% 0.111 182.4), rgb(69, 193, 176).
Aa
Black text reads best on this color (9.50:1).
About this color
#45C1B0 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 74%, its chroma 0.111 and its hue 182°. Its hue sits on the cool side of the wheel. The nearest named color is Topaz (#13BBAF), ΔE 0.028 away. Black text reads best on it, at 9.50:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (74%) |
| Chroma | moderately saturated (0.111) |
| Temperature | cool |
| Nearest name | Topaz (#13BBAF) |
| Black text | 9.50:1 |
| White text | 2.20:1 |
Values
| HEX | #45C1B0 |
| RGB | rgb(69, 193, 176) |
| HSL | hsl(172, 50%, 51%) |
| OKLCH | oklch(73.8% 0.111 182.4) |
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 #45C1B0 | 2.20:1 | Fails | Lc -47.9 | Large or bold text, headings |
| Black text on #45C1B0 | 9.50:1 | AAA | Lc 60.8 | Content text, not long reading |
| #45C1B0 text on white | 2.20:1 | Fails | Lc 43.2 | Non-text elements, placeholder text |
| #45C1B0 text on black | 9.50:1 | AAA | Lc -59.0 | 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
#EFF8F6
oklch(97.2% 0.01 181.4)
-
Step 100
100
#DCEFEB
oklch(93.7% 0.021 181.9)
-
Step 200
200
#BEE2DB
oklch(88.5% 0.039 182.3)
-
Step 300
300
#8DD0C4
oklch(80.9% 0.07 182)
-
Step 400
400 (this color)
#45C1B0
oklch(73.8% 0.111 182.4)
-
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
#005C52
oklch(42.6% 0.076 182.2)
-
Step 900
900
#004D44
oklch(37.7% 0.068 181.7)
-
Step 950
950
#002E28
oklch(27% 0.049 181.5)
#45C1B0 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) | #B8B6AF | 0.118 |
| Deuteranopia (no green cones) | #A6A9B2 | 0.112 |
| Tritanopia (no blue cones) | #00C5BC | 0.022 |
| Achromatopsia (no color) | #AEAEAE | 0.112 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #45C1B0
#45C1B0
oklch(73.8% 0.111 182.4)
- #E58CA4
#E58CA4
oklch(73.9% 0.111 2.7)
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 #45C1B0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Topaz #13BBAF ΔE 0.028
- Medium Aquamarine #66CDAA ΔE 0.047
- Greeny Blue #42B395 ΔE 0.048
- Light Sea Green #20B2AA ΔE 0.049
- Dark Turquoise #00CED1 ΔE 0.049
- Medium Turquoise #48D1CC ΔE 0.052
- Green Blue #01C08D ΔE 0.058
- Greenblue #23C48B ΔE 0.060
Use #45C1B0 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.