#40A5C8
Closest named color: Turquoise Blue (#06B1C4). oklch(67.8% 0.105 224.7), rgb(64, 165, 200).
Aa
Black text reads best on this color (7.43:1).
About this color
#40A5C8 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 68%, its chroma 0.105 and its hue 225°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.039 away. Black text reads best on it, at 7.43:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (68%) |
| Chroma | moderately saturated (0.105) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 7.43:1 |
| White text | 2.82:1 |
Values
| HEX | #40A5C8 |
| RGB | rgb(64, 165, 200) |
| HSL | hsl(195, 55%, 52%) |
| OKLCH | oklch(67.8% 0.105 224.7) |
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 #40A5C8 | 2.82:1 | Fails | Lc -59.2 | Large or bold text, headings |
| Black text on #40A5C8 | 7.43:1 | AAA | Lc 50.1 | Large or bold text, headings |
| #40A5C8 text on white | 2.82:1 | Fails | Lc 54.0 | Large or bold text, headings |
| #40A5C8 text on black | 7.43:1 | AAA | Lc -47.9 | 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
#F0F7FA
oklch(97.2% 0.008 225.1)
-
Step 100
100
#DDEDF3
oklch(93.6% 0.019 222.2)
-
Step 200
200
#C0DFEB
oklch(88.5% 0.037 223.2)
-
Step 300
300
#92CAE1
oklch(80.8% 0.066 225.4)
-
Step 400
400 (this color)
#40A5C8
oklch(67.8% 0.105 224.7)
-
Step 500
500
#0098BF
oklch(63.2% 0.119 224.4)
-
Step 600
600
#007FA1
oklch(55.5% 0.105 225)
-
Step 700
700
#006B88
oklch(49.1% 0.093 224.9)
-
Step 800
800
#005870
oklch(42.8% 0.081 224.4)
-
Step 900
900
#00495E
oklch(37.7% 0.071 225)
-
Step 950
950
#002B39
oklch(26.9% 0.051 225.5)
#40A5C8 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) | #92A2CA | 0.082 |
| Deuteranopia (no green cones) | #7F94C8 | 0.072 |
| Tritanopia (no blue cones) | #00B0B0 | 0.059 |
| Achromatopsia (no color) | #9A9A9A | 0.105 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40A5C8
#40A5C8
oklch(67.8% 0.105 224.7)
- #CD8260
#CD8260
oklch(67.7% 0.105 44.9)
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 #40A5C8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.039
- Greyblue #77A1B5 ΔE 0.052
- Cadet Blue #5F9EA0 ΔE 0.059
- Bluegrey #85A3B2 ΔE 0.069
- Light Sea Green #20B2AA ΔE 0.069
- Faded Blue #658CBB ΔE 0.070
- Bluey Grey #89A0B0 ΔE 0.073
- Silver Lake Blue #778DA9 ΔE 0.079
Use #40A5C8 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.