#40A2CF
Closest named color: Turquoise Blue (#06B1C4). oklch(67.4% 0.112 231.8), rgb(64, 162, 207).
Aa
Black text reads best on this color (7.28:1).
About this color
#40A2CF is a medium-light, moderately saturated blue. In OKLCH its lightness is 67%, its chroma 0.112 and its hue 232°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.052 away. Black text reads best on it, at 7.28:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.112) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 7.28:1 |
| White text | 2.88:1 |
Values
| HEX | #40A2CF |
| RGB | rgb(64, 162, 207) |
| HSL | hsl(199, 60%, 53%) |
| OKLCH | oklch(67.4% 0.112 231.8) |
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 #40A2CF | 2.88:1 | Fails | Lc -60.1 | Content text, not long reading |
| Black text on #40A2CF | 7.28:1 | AAA | Lc 49.3 | Large or bold text, headings |
| #40A2CF text on white | 2.88:1 | Fails | Lc 54.8 | Large or bold text, headings |
| #40A2CF text on black | 7.28:1 | AAA | Lc -47.0 | 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
#F0F7FB
oklch(97.2% 0.009 232.4)
-
Step 100
100
#DDEDF5
oklch(93.7% 0.02 229)
-
Step 200
200
#C1DEEF
oklch(88.5% 0.039 233.6)
-
Step 300
300
#93C9E6
oklch(80.9% 0.069 232.2)
-
Step 400
400 (this color)
#40A2CF
oklch(67.4% 0.112 231.8)
-
Step 500
500
#0096C9
oklch(63.2% 0.128 231.5)
-
Step 600
600
#007EAA
oklch(55.7% 0.113 231.8)
-
Step 700
700
#006A8F
oklch(49.2% 0.1 231.3)
-
Step 800
800
#005676
oklch(42.6% 0.087 232.3)
-
Step 900
900
#004863
oklch(37.7% 0.077 231.8)
-
Step 950
950
#002B3C
oklch(27.1% 0.054 230.4)
#40A2CF 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) | #8CA0D1 | 0.075 |
| Deuteranopia (no green cones) | #7892CE | 0.064 |
| Tritanopia (no blue cones) | #00AEB1 | 0.069 |
| Achromatopsia (no color) | #989898 | 0.112 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40A2CF
#40A2CF
oklch(67.4% 0.112 231.8)
- #CC8253
#CC8253
oklch(67.4% 0.111 52.3)
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 #40A2CF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.052
- Greyblue #77A1B5 ΔE 0.059
- Faded Blue #658CBB ΔE 0.064
- Chefchaouen Blue #4895EF ΔE 0.067
- Cadet Blue #5F9EA0 ΔE 0.070
- Dark Sky Blue #448EE4 ΔE 0.070
- Cornflower Blue #6495ED ΔE 0.071
- Bluegrey #85A3B2 ΔE 0.076
Use #40A2CF 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.