#4B7BB7
Closest named color: Steel Blue (#4682B4). oklch(57.6% 0.107 254.8), rgb(75, 123, 183).
Aa
Black text reads best on this color (4.81:1).
About this color
#4B7BB7 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 58%, its chroma 0.107 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Steel Blue (#4682B4), ΔE 0.022 away. Black text reads best on it, at 4.81:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.107) |
| Temperature | cool |
| Nearest name | Steel Blue (#4682B4) |
| Black text | 4.81:1 |
| White text | 4.36:1 |
Values
| HEX | #4B7BB7 |
| RGB | rgb(75, 123, 183) |
| HSL | hsl(213, 43%, 51%) |
| OKLCH | oklch(57.6% 0.107 254.8) |
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 #4B7BB7 | 4.36:1 | AA large text | Lc -75.5 | Fine for body text |
| Black text on #4B7BB7 | 4.81:1 | AA | Lc 34.0 | Non-text elements, placeholder text |
| #4B7BB7 text on white | 4.36:1 | AA large text | Lc 70.0 | Content text, not long reading |
| #4B7BB7 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
#F3F6FA
oklch(97.2% 0.006 255.5)
-
Step 100
100
#E4EBF3
oklch(93.7% 0.013 251.6)
-
Step 200
200
#CEDAEB
oklch(88.4% 0.027 257)
-
Step 300
300
#ACC3E0
oklch(80.9% 0.048 254.3)
-
Step 400
400
#80A3D0
oklch(70.6% 0.077 255)
-
Step 500
500
#5F8CC4
oklch(63.1% 0.098 254.5)
-
Step 600
600 (this color)
#4B7BB7
oklch(57.6% 0.107 254.8)
-
Step 700
700
#376298
oklch(49.1% 0.1 255)
-
Step 800
800
#2E507B
oklch(42.7% 0.082 255.1)
-
Step 900
900
#294363
oklch(37.8% 0.064 254.3)
-
Step 950
950
#18273A
oklch(26.9% 0.041 254.8)
#4B7BB7 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) | #627FBA | 0.030 |
| Deuteranopia (no green cones) | #5474B6 | 0.020 |
| Tritanopia (no blue cones) | #008991 | 0.091 |
| Achromatopsia (no color) | #797979 | 0.107 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B7BB7
#4B7BB7
oklch(57.6% 0.107 254.8)
- #9E6F23
#9E6F23
oklch(57.7% 0.107 74.9)
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 #4B7BB7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Steel Blue #4682B4 ΔE 0.022
- Windows Blue #3778BF ΔE 0.025
- Cool Blue #4984B8 ΔE 0.025
- Flat Blue #3C73A8 ΔE 0.035
- Off Blue #5684AE ΔE 0.035
- Nice Blue #107AB0 ΔE 0.041
- Cerulean #457B9D ΔE 0.042
- Dull Blue #49759C ΔE 0.043
Use #4B7BB7 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.