#3995CF
Closest named color: Dark Sky Blue (#448EE4). oklch(64.1% 0.122 240.4), rgb(57, 149, 207).
Aa
Black text reads best on this color (6.37:1).
About this color
#3995CF is a medium-light, moderately saturated blue. In OKLCH its lightness is 64%, its chroma 0.122 and its hue 240°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.042 away. Black text reads best on it, at 6.37:1.
| Hue family | Blues |
| Lightness | medium-light (64%) |
| Chroma | moderately saturated (0.122) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 6.37:1 |
| White text | 3.29:1 |
Values
| HEX | #3995CF |
| RGB | rgb(57, 149, 207) |
| HSL | hsl(203, 61%, 52%) |
| OKLCH | oklch(64.1% 0.122 240.4) |
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 #3995CF | 3.29:1 | AA large text | Lc -65.4 | Content text, not long reading |
| Black text on #3995CF | 6.37:1 | AA | Lc 44.1 | Non-text elements, placeholder text |
| #3995CF text on white | 3.29:1 | AA large text | Lc 60.0 | Large or bold text, headings |
| #3995CF text on black | 6.37:1 | AA | Lc -41.7 | Non-text elements, placeholder text |
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
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E0ECF5
oklch(93.7% 0.018 240)
-
Step 200
200
#C6DDED
oklch(88.5% 0.033 238.2)
-
Step 300
300
#9EC6E4
oklch(80.8% 0.06 240.9)
-
Step 400
400
#67A8D6
oklch(70.6% 0.095 240.8)
-
Step 500
500 (this color)
#3995CF
oklch(64.1% 0.122 240.4)
-
Step 600
600
#007BB6
oklch(55.6% 0.128 240.2)
-
Step 700
700
#00679A
oklch(49.1% 0.113 240.5)
-
Step 800
800
#00547F
oklch(42.6% 0.099 240.7)
-
Step 900
900
#0D4667
oklch(37.7% 0.079 240.3)
-
Step 950
950
#0B293D
oklch(27% 0.051 241.6)
#3995CF 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) | #7A96D2 | 0.063 |
| Deuteranopia (no green cones) | #6587CE | 0.050 |
| Tritanopia (no blue cones) | #00A3A9 | 0.083 |
| Achromatopsia (no color) | #8E8E8E | 0.122 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3995CF
#3995CF
oklch(64.1% 0.122 240.4)
- #C27936
#C27936
oklch(64.2% 0.122 60.1)
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 #3995CF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.042
- Faded Blue #658CBB ΔE 0.046
- Water Blue #0E87CC ΔE 0.047
- Chefchaouen Blue #4895EF ΔE 0.051
- Cool Blue #4984B8 ΔE 0.051
- Blue NCS #118AB2 ΔE 0.056
- Steel Blue #4682B4 ΔE 0.059
- Dusty Blue #5A86AD ΔE 0.059
Use #3995CF 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.