#4F7BB3
Closest named color: Steel Blue (#4682B4). oklch(57.6% 0.1 255), rgb(79, 123, 179).
Aa
Black text reads best on this color (4.81:1).
About this color
#4F7BB3 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 58%, its chroma 0.100 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Steel Blue (#4682B4), ΔE 0.020 away. Black text reads best on it, at 4.81:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.100) |
| Temperature | cool |
| Nearest name | Steel Blue (#4682B4) |
| Black text | 4.81:1 |
| White text | 4.35:1 |
Values
| HEX | #4F7BB3 |
| RGB | rgb(79, 123, 179) |
| HSL | hsl(214, 40%, 51%) |
| OKLCH | oklch(57.6% 0.1 255) |
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 #4F7BB3 | 4.35:1 | AA large text | Lc -75.6 | Fine for body text |
| Black text on #4F7BB3 | 4.81:1 | AA | Lc 34.0 | Non-text elements, placeholder text |
| #4F7BB3 text on white | 4.35:1 | AA large text | Lc 70.1 | Content text, not long reading |
| #4F7BB3 text on black | 4.81:1 | AA | Lc -31.6 | 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 600.
-
Step 50
50
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EAF3
oklch(93.5% 0.014 258.3)
-
Step 200
200
#CEDAEA
oklch(88.4% 0.026 255.6)
-
Step 300
300
#AEC3DE
oklch(81% 0.045 254.8)
-
Step 400
400
#83A3CD
oklch(70.7% 0.071 255.4)
-
Step 500
500
#638CC0
oklch(63.1% 0.091 254.8)
-
Step 600
600 (this color)
#4F7BB3
oklch(57.6% 0.1 255)
-
Step 700
700
#3A6294
oklch(49% 0.093 254.8)
-
Step 800
800
#315078
oklch(42.6% 0.076 255.4)
-
Step 900
900
#2B4361
oklch(37.8% 0.06 254.6)
-
Step 950
950
#1A2739
oklch(27% 0.038 256.7)
#4F7BB3 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) | #647EB5 | 0.027 |
| Deuteranopia (no green cones) | #5775B2 | 0.018 |
| Tritanopia (no blue cones) | #08888F | 0.089 |
| Achromatopsia (no color) | #797979 | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4F7BB3
#4F7BB3
oklch(57.6% 0.1 255)
- #9B702C
#9B702C
oklch(57.6% 0.1 75.6)
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 #4F7BB3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Steel Blue #4682B4 ΔE 0.020
- Cool Blue #4984B8 ΔE 0.025
- Off Blue #5684AE ΔE 0.031
- Windows Blue #3778BF ΔE 0.031
- Flat Blue #3C73A8 ΔE 0.035
- Stormy Blue #507B9C ΔE 0.036
- Cerulean #457B9D ΔE 0.038
- Dull Blue #49759C ΔE 0.038
Use #4F7BB3 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.