#3F93BC
Closest named color: Faded Blue (#658CBB). oklch(62.9% 0.101 232.8), rgb(63, 147, 188).
Aa
Black text reads best on this color (6.11:1).
About this color
#3F93BC is a medium-light, moderately saturated blue. In OKLCH its lightness is 63%, its chroma 0.101 and its hue 233°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.038 away. Black text reads best on it, at 6.11:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.101) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 6.11:1 |
| White text | 3.43:1 |
Values
| HEX | #3F93BC |
| RGB | rgb(63, 147, 188) |
| HSL | hsl(200, 50%, 49%) |
| OKLCH | oklch(62.9% 0.101 232.8) |
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 #3F93BC | 3.43:1 | AA large text | Lc -67.1 | Content text, not long reading |
| Black text on #3F93BC | 6.11:1 | AA | Lc 42.4 | Non-text elements, placeholder text |
| #3F93BC text on white | 3.43:1 | AA large text | Lc 61.6 | Content text, not long reading |
| #3F93BC text on black | 6.11:1 | AA | Lc -40.1 | 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
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E1ECF2
oklch(93.7% 0.014 231.2)
-
Step 200
200
#C8DDE9
oklch(88.6% 0.028 232.7)
-
Step 300
300
#A2C7DC
oklch(81% 0.049 233.1)
-
Step 400
400
#6CA9CA
oklch(70.6% 0.079 233.2)
-
Step 500
500 (this color)
#3F93BC
oklch(62.9% 0.101 232.8)
-
Step 600
600
#127DA9
oklch(55.6% 0.11 233.1)
-
Step 700
700
#006990
oklch(49% 0.101 232.9)
-
Step 800
800
#095676
oklch(42.7% 0.085 233.4)
-
Step 900
900
#15475F
oklch(37.7% 0.066 233.5)
-
Step 950
950
#0E2A37
oklch(27% 0.041 231.2)
#3F93BC 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) | #7F91BE | 0.066 |
| Deuteranopia (no green cones) | #6E85BB | 0.056 |
| Tritanopia (no blue cones) | #009EA1 | 0.065 |
| Achromatopsia (no color) | #8A8A8A | 0.101 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F93BC
#3F93BC
oklch(62.9% 0.101 232.8)
- #B9774C
#B9774C
oklch(63% 0.101 53)
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 #3F93BC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.038
- Blue NCS #118AB2 ΔE 0.040
- Dusty Blue #5A86AD ΔE 0.041
- Cool Blue #4984B8 ΔE 0.042
- Off Blue #5684AE ΔE 0.043
- Steel Blue #4682B4 ΔE 0.047
- Water Blue #0E87CC ΔE 0.054
- Silver Lake Blue #778DA9 ΔE 0.059
Use #3F93BC 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.