#40A0CC
Closest named color: Turquoise Blue (#06B1C4). oklch(66.8% 0.11 231.6), rgb(64, 160, 204).
Aa
Black text reads best on this color (7.11:1).
About this color
#40A0CC is a medium-light, moderately saturated blue. In OKLCH its lightness is 67%, its chroma 0.110 and its hue 232°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.055 away. Black text reads best on it, at 7.11:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.110) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 7.11:1 |
| White text | 2.95:1 |
Values
| HEX | #40A0CC |
| RGB | rgb(64, 160, 204) |
| HSL | hsl(199, 58%, 53%) |
| OKLCH | oklch(66.8% 0.11 231.6) |
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 #40A0CC | 2.95:1 | Fails | Lc -61.0 | Content text, not long reading |
| Black text on #40A0CC | 7.11:1 | AAA | Lc 48.3 | Large or bold text, headings |
| #40A0CC text on white | 2.95:1 | Fails | Lc 55.7 | Large or bold text, headings |
| #40A0CC text on black | 7.11:1 | AAA | Lc -46.1 | 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 500.
-
Step 50
50
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E0ECF3
oklch(93.6% 0.016 233)
-
Step 200
200
#C6DDEA
oklch(88.4% 0.03 232.5)
-
Step 300
300
#9EC7DE
oklch(80.8% 0.054 232.9)
-
Step 400
400
#66AACD
oklch(70.6% 0.086 232.2)
-
Step 500
500 (this color)
#40A0CC
oklch(66.8% 0.11 231.6)
-
Step 600
600
#007EA9
oklch(55.6% 0.112 231.2)
-
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
#0A4861
oklch(37.8% 0.072 231.5)
-
Step 950
950
#0A2A39
oklch(27% 0.046 232.6)
#40A0CC 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) | #8A9ECE | 0.074 |
| Deuteranopia (no green cones) | #7790CB | 0.063 |
| Tritanopia (no blue cones) | #00ACAF | 0.068 |
| Achromatopsia (no color) | #969696 | 0.110 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40A0CC
#40A0CC
oklch(66.8% 0.11 231.6)
- #CA8052
#CA8052
oklch(66.8% 0.111 51.7)
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 #40A0CC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.055
- Greyblue #77A1B5 ΔE 0.059
- Faded Blue #658CBB ΔE 0.059
- Cadet Blue #5F9EA0 ΔE 0.067
- Chefchaouen Blue #4895EF ΔE 0.068
- Dark Sky Blue #448EE4 ΔE 0.069
- Cornflower Blue #6495ED ΔE 0.072
- Silver Lake Blue #778DA9 ΔE 0.074
Use #40A0CC 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.