#4F9EC4
Closest named color: Greyblue (#77A1B5). oklch(66.5% 0.096 231.5), rgb(79, 158, 196).
Aa
Black text reads best on this color (7.02:1).
About this color
#4F9EC4 is a medium-light, moderately saturated blue. In OKLCH its lightness is 66%, its chroma 0.096 and its hue 232°. Its hue sits on the cool side of the wheel. The nearest named color is Greyblue (#77A1B5), ΔE 0.047 away. Black text reads best on it, at 7.02:1.
| Hue family | Blues |
| Lightness | medium-light (66%) |
| Chroma | moderately saturated (0.096) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 7.02:1 |
| White text | 2.99:1 |
Values
| HEX | #4F9EC4 |
| RGB | rgb(79, 158, 196) |
| HSL | hsl(199, 50%, 54%) |
| OKLCH | oklch(66.5% 0.096 231.5) |
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 #4F9EC4 | 2.99:1 | Fails | Lc -61.7 | Content text, not long reading |
| Black text on #4F9EC4 | 7.02:1 | AAA | Lc 47.7 | Large or bold text, headings |
| #4F9EC4 text on white | 2.99:1 | Fails | Lc 56.4 | Large or bold text, headings |
| #4F9EC4 text on black | 7.02:1 | AAA | Lc -45.4 | 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 500.
-
Step 50
50
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E1ECF1
oklch(93.6% 0.014 226.6)
-
Step 200
200
#C9DDE8
oklch(88.6% 0.026 231.7)
-
Step 300
300
#A3C7DA
oklch(81% 0.047 231.1)
-
Step 400
400
#6FA9C7
oklch(70.6% 0.075 231.8)
-
Step 500
500 (this color)
#4F9EC4
oklch(66.5% 0.096 231.5)
-
Step 600
600
#1C7DA5
oklch(55.5% 0.104 231.6)
-
Step 700
700
#0A6A8E
oklch(49.2% 0.097 231.4)
-
Step 800
800
#105673
oklch(42.7% 0.08 231.8)
-
Step 900
900
#18475D
oklch(37.7% 0.063 232.2)
-
Step 950
950
#102A36
oklch(27.1% 0.039 230.5)
#4F9EC4 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) | #8B9CC6 | 0.065 |
| Deuteranopia (no green cones) | #7B90C3 | 0.056 |
| Tritanopia (no blue cones) | #00A8AA | 0.065 |
| Achromatopsia (no color) | #959595 | 0.096 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4F9EC4
#4F9EC4
oklch(66.5% 0.096 231.5)
- #C3825C
#C3825C
oklch(66.5% 0.096 50.8)
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 #4F9EC4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greyblue #77A1B5 ΔE 0.047
- Faded Blue #658CBB ΔE 0.050
- Cadet Blue #5F9EA0 ΔE 0.055
- Turquoise Blue #06B1C4 ΔE 0.058
- Silver Lake Blue #778DA9 ΔE 0.061
- Blue Grey #758DA3 ΔE 0.064
- Bluegrey #85A3B2 ΔE 0.065
- Dusty Blue #5A86AD ΔE 0.067
Use #4F9EC4 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.