#3898DC
Closest named color: Dark Sky Blue (#448EE4). oklch(65.5% 0.134 243.7), rgb(56, 152, 220).
Aa
Black text reads best on this color (6.69:1).
About this color
#3898DC is a medium-light, moderately saturated blue. In OKLCH its lightness is 65%, its chroma 0.134 and its hue 244°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.032 away. Black text reads best on it, at 6.69:1.
| Hue family | Blues |
| Lightness | medium-light (65%) |
| Chroma | moderately saturated (0.134) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 6.69:1 |
| White text | 3.13:1 |
Values
| HEX | #3898DC |
| RGB | rgb(56, 152, 220) |
| HSL | hsl(205, 70%, 54%) |
| OKLCH | oklch(65.5% 0.134 243.7) |
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 #3898DC | 3.13:1 | AA large text | Lc -63.5 | Content text, not long reading |
| Black text on #3898DC | 6.69:1 | AA | Lc 46.0 | Large or bold text, headings |
| #3898DC text on white | 3.13:1 | AA large text | Lc 58.1 | Large or bold text, headings |
| #3898DC text on black | 6.69:1 | AA | Lc -43.7 | 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
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E0ECF6
oklch(93.7% 0.019 243)
-
Step 200
200
#C5DCF0
oklch(88.4% 0.037 244.4)
-
Step 300
300
#9DC6E8
oklch(80.9% 0.065 243.7)
-
Step 400
400
#63A8DD
oklch(70.7% 0.105 243.2)
-
Step 500
500 (this color)
#3898DC
oklch(65.5% 0.134 243.7)
-
Step 600
600
#0079BC
oklch(55.5% 0.136 243.9)
-
Step 700
700
#00669F
oklch(49.1% 0.12 243.6)
-
Step 800
800
#005383
oklch(42.6% 0.105 243.8)
-
Step 900
900
#08456C
oklch(37.6% 0.088 244)
-
Step 950
950
#09293F
oklch(27% 0.055 243)
#3898DC 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) | #799ADF | 0.061 |
| Deuteranopia (no green cones) | #628BDB | 0.045 |
| Tritanopia (no blue cones) | #00A9B0 | 0.095 |
| Achromatopsia (no color) | #919191 | 0.134 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3898DC
#3898DC
oklch(65.5% 0.134 243.7)
- #C97C25
#C97C25
oklch(65.5% 0.135 63.6)
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 #3898DC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.032
- Chefchaouen Blue #4895EF ΔE 0.034
- Cornflower Blue #6495ED ΔE 0.047
- Water Blue #0E87CC ΔE 0.057
- Faded Blue #658CBB ΔE 0.059
- Soft Blue #6488EA ΔE 0.061
- Dodger Blue #1E90FF ΔE 0.062
- Cool Blue #4984B8 ΔE 0.068
Use #3898DC 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.