#40ACE2
Closest named color: Turquoise Blue (#06B1C4). oklch(70.6% 0.125 234.5), rgb(64, 172, 226).
Aa
Black text reads best on this color (8.21:1).
About this color
#40ACE2 is a medium-light, moderately saturated blue. In OKLCH its lightness is 71%, its chroma 0.125 and its hue 234°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.056 away. Black text reads best on it, at 8.21:1.
| Hue family | Blues |
| Lightness | medium-light (71%) |
| Chroma | moderately saturated (0.125) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 8.21:1 |
| White text | 2.55:1 |
Values
| HEX | #40ACE2 |
| RGB | rgb(64, 172, 226) |
| HSL | hsl(200, 74%, 57%) |
| OKLCH | oklch(70.6% 0.125 234.5) |
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 #40ACE2 | 2.55:1 | Fails | Lc -54.8 | Large or bold text, headings |
| Black text on #40ACE2 | 8.21:1 | AAA | Lc 54.3 | Large or bold text, headings |
| #40ACE2 text on white | 2.55:1 | Fails | Lc 49.7 | Large or bold text, headings |
| #40ACE2 text on black | 8.21:1 | AAA | Lc -52.3 | 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
#EFF7FC
oklch(97.2% 0.011 234.8)
-
Step 100
100
#DCEDF7
oklch(93.6% 0.023 233.4)
-
Step 200
200
#BEDFF2
oklch(88.6% 0.044 233.2)
-
Step 300
300
#8EC9EC
oklch(80.8% 0.078 235.1)
-
Step 400
400 (this color)
#40ACE2
oklch(70.6% 0.125 234.5)
-
Step 500
500
#0095CD
oklch(63.1% 0.132 234.2)
-
Step 600
600
#007DAD
oklch(55.6% 0.117 234.3)
-
Step 700
700
#006992
oklch(49.1% 0.103 234.3)
-
Step 800
800
#005679
oklch(42.8% 0.09 234.7)
-
Step 900
900
#004765
oklch(37.6% 0.08 234.9)
-
Step 950
950
#002A3E
oklch(26.9% 0.057 235.2)
#40ACE2 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) | #92ABE5 | 0.078 |
| Deuteranopia (no green cones) | #7C9BE1 | 0.065 |
| Tritanopia (no blue cones) | #00BABE | 0.079 |
| Achromatopsia (no color) | #A2A2A2 | 0.125 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40ACE2
#40ACE2
oklch(70.6% 0.125 234.5)
- #DC8A4F
#DC8A4F
oklch(70.7% 0.125 54.8)
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 #40ACE2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.056
- Deep Sky Blue #00BFFF ΔE 0.058
- Chefchaouen Blue #4895EF ΔE 0.070
- Cornflower Blue #6495ED ΔE 0.071
- Greyblue #77A1B5 ΔE 0.074
- Vivid Sky Blue #4CC9F0 ΔE 0.081
- Dark Sky Blue #448EE4 ΔE 0.084
- Bluegrey #85A3B2 ΔE 0.085
Use #40ACE2 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.