#3198C4
Closest named color: Blue NCS (#118AB2). oklch(64.1% 0.112 231), rgb(49, 152, 196).
Aa
Black text reads best on this color (6.41:1).
About this color
#3198C4 is a medium-light, moderately saturated blue. In OKLCH its lightness is 64%, its chroma 0.112 and its hue 231°. Its hue sits on the cool side of the wheel. The nearest named color is Blue NCS (#118AB2), ΔE 0.049 away. Black text reads best on it, at 6.41:1.
| Hue family | Blues |
| Lightness | medium-light (64%) |
| Chroma | moderately saturated (0.112) |
| Temperature | cool |
| Nearest name | Blue NCS (#118AB2) |
| Black text | 6.41:1 |
| White text | 3.27:1 |
Values
| HEX | #3198C4 |
| RGB | rgb(49, 152, 196) |
| HSL | hsl(198, 60%, 48%) |
| OKLCH | oklch(64.1% 0.112 231) |
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 #3198C4 | 3.27:1 | AA large text | Lc -65.1 | Content text, not long reading |
| Black text on #3198C4 | 6.41:1 | AA | Lc 44.4 | Non-text elements, placeholder text |
| #3198C4 text on white | 3.27:1 | AA large text | Lc 59.7 | Large or bold text, headings |
| #3198C4 text on black | 6.41:1 | AA | Lc -42.0 | 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
#E0ECF3
oklch(93.6% 0.016 233)
-
Step 200
200
#C6DDEA
oklch(88.4% 0.03 232.5)
-
Step 300
300
#9DC8DE
oklch(80.9% 0.055 230.5)
-
Step 400
400
#63ABCE
oklch(70.8% 0.089 230.9)
-
Step 500
500 (this color)
#3198C4
oklch(64.1% 0.112 231)
-
Step 600
600
#007EA9
oklch(55.6% 0.112 231.2)
-
Step 700
700
#006A8E
oklch(49.1% 0.099 230.6)
-
Step 800
800
#005775
oklch(42.8% 0.086 230.3)
-
Step 900
900
#054861
oklch(37.7% 0.073 230.6)
-
Step 950
950
#092A39
oklch(26.9% 0.046 232.1)
#3198C4 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) | #8296C6 | 0.076 |
| Deuteranopia (no green cones) | #6E88C3 | 0.065 |
| Tritanopia (no blue cones) | #00A4A7 | 0.066 |
| Achromatopsia (no color) | #8E8E8E | 0.113 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3198C4
#3198C4
oklch(64.1% 0.112 231)
- #C27749
#C27749
oklch(64.1% 0.112 51.1)
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 #3198C4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue NCS #118AB2 ΔE 0.049
- Faded Blue #658CBB ΔE 0.049
- Cool Blue #4984B8 ΔE 0.055
- Dusty Blue #5A86AD ΔE 0.057
- Water Blue #0E87CC ΔE 0.057
- Off Blue #5684AE ΔE 0.059
- Steel Blue #4682B4 ΔE 0.061
- Dark Sky Blue #448EE4 ΔE 0.063
Use #3198C4 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.