#40A0DF
Closest named color: Chefchaouen Blue (#4895EF). oklch(67.7% 0.129 241.3), rgb(64, 160, 223).
Aa
Black text reads best on this color (7.31:1).
About this color
#40A0DF is a medium-light, moderately saturated blue. In OKLCH its lightness is 68%, its chroma 0.129 and its hue 241°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.043 away. Black text reads best on it, at 7.31:1.
| Hue family | Blues |
| Lightness | medium-light (68%) |
| Chroma | moderately saturated (0.129) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 7.31:1 |
| White text | 2.87:1 |
Values
| HEX | #40A0DF |
| RGB | rgb(64, 160, 223) |
| HSL | hsl(204, 71%, 56%) |
| OKLCH | oklch(67.7% 0.129 241.3) |
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 #40A0DF | 2.87:1 | Fails | Lc -59.9 | Large or bold text, headings |
| Black text on #40A0DF | 7.31:1 | AAA | Lc 49.4 | Large or bold text, headings |
| #40A0DF text on white | 2.87:1 | Fails | Lc 54.6 | Large or bold text, headings |
| #40A0DF text on black | 7.31:1 | AAA | Lc -47.2 | 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
#EFF7FC
oklch(97.2% 0.011 234.8)
-
Step 100
100
#DDECF8
oklch(93.5% 0.023 241.9)
-
Step 200
200
#C0DEF5
oklch(88.6% 0.045 241.1)
-
Step 300
300
#92C8F0
oklch(81% 0.08 241)
-
Step 400
400 (this color)
#40A0DF
oklch(67.7% 0.129 241.3)
-
Step 500
500
#0092DA
oklch(63.1% 0.148 241.4)
-
Step 600
600
#007BB8
oklch(55.7% 0.13 241.1)
-
Step 700
700
#00679B
oklch(49.1% 0.115 241)
-
Step 800
800
#005480
oklch(42.6% 0.1 241.3)
-
Step 900
900
#00466C
oklch(37.7% 0.089 241.5)
-
Step 950
950
#002942
oklch(26.9% 0.063 241.6)
#40A0DF 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) | #83A1E2 | 0.065 |
| Deuteranopia (no green cones) | #6D92DE | 0.050 |
| Tritanopia (no blue cones) | #00B0B6 | 0.090 |
| Achromatopsia (no color) | #989898 | 0.129 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40A0DF
#40A0DF
oklch(67.7% 0.129 241.3)
- #D08339
#D08339
oklch(67.8% 0.129 61.2)
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 #40A0DF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.043
- Cornflower Blue #6495ED ΔE 0.049
- Dark Sky Blue #448EE4 ΔE 0.052
- Faded Blue #658CBB ΔE 0.069
- Soft Blue #6488EA ΔE 0.073
- Turquoise Blue #06B1C4 ΔE 0.073
- Dodger Blue #1E90FF ΔE 0.074
- Greyblue #77A1B5 ΔE 0.077
Use #40A0DF 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.