#45B8CB
Closest named color: Turquoise Blue (#06B1C4). oklch(72.6% 0.105 210.4), rgb(69, 184, 203).
Aa
Black text reads best on this color (8.97:1).
About this color
#45B8CB is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 73%, its chroma 0.105 and its hue 210°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.033 away. Black text reads best on it, at 8.97:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (73%) |
| Chroma | moderately saturated (0.105) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 8.97:1 |
| White text | 2.34:1 |
Values
| HEX | #45B8CB |
| RGB | rgb(69, 184, 203) |
| HSL | hsl(189, 56%, 53%) |
| OKLCH | oklch(72.6% 0.105 210.4) |
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 #45B8CB | 2.34:1 | Fails | Lc -50.8 | Large or bold text, headings |
| Black text on #45B8CB | 8.97:1 | AAA | Lc 58.1 | Large or bold text, headings |
| #45B8CB text on white | 2.34:1 | Fails | Lc 45.8 | Large or bold text, headings |
| #45B8CB text on black | 8.97:1 | AAA | Lc -56.2 | 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
#EFF7F9
oklch(97.1% 0.009 214.3)
-
Step 100
100
#DCEEF1
oklch(93.7% 0.019 208.8)
-
Step 200
200
#BFE0E7
oklch(88.5% 0.036 211.9)
-
Step 300
300
#8ECDD8
oklch(81% 0.066 209.6)
-
Step 400
400 (this color)
#45B8CB
oklch(72.6% 0.105 210.4)
-
Step 500
500
#009BAE
oklch(63.2% 0.109 210)
-
Step 600
600
#008293
oklch(55.6% 0.096 210.7)
-
Step 700
700
#006D7C
oklch(49% 0.085 211.2)
-
Step 800
800
#005A66
oklch(42.9% 0.074 210.4)
-
Step 900
900
#004B55
oklch(37.8% 0.065 210)
-
Step 950
950
#002C33
oklch(26.9% 0.047 211.1)
#45B8CB 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) | #A8B2CC | 0.098 |
| Deuteranopia (no green cones) | #94A3CB | 0.090 |
| Tritanopia (no blue cones) | #00C0BE | 0.040 |
| Achromatopsia (no color) | #A9A9A9 | 0.105 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #45B8CB
#45B8CB
oklch(72.6% 0.105 210.4)
- #E08D7E
#E08D7E
oklch(72.5% 0.104 30.9)
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 #45B8CB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.033
- Topaz #13BBAF ΔE 0.051
- Light Sea Green #20B2AA ΔE 0.054
- Dark Turquoise #00CED1 ΔE 0.060
- Vivid Sky Blue #4CC9F0 ΔE 0.064
- Greyblue #77A1B5 ΔE 0.069
- Medium Turquoise #48D1CC ΔE 0.072
- Deep Sky Blue #00BFFF ΔE 0.074
Use #45B8CB 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.