#4B7CA3
Closest named color: Stormy Blue (#507B9C). oklch(56.8% 0.081 243.9), rgb(75, 124, 163).
Aa
Black text reads best on this color (4.71:1).
About this color
#4B7CA3 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 57%, its chroma 0.081 and its hue 244°. Its hue sits on the cool side of the wheel. The nearest named color is Stormy Blue (#507B9C), ΔE 0.011 away. Black text reads best on it, at 4.71:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.081) |
| Temperature | cool |
| Nearest name | Stormy Blue (#507B9C) |
| Black text | 4.71:1 |
| White text | 4.45:1 |
Values
| HEX | #4B7CA3 |
| RGB | rgb(75, 124, 163) |
| HSL | hsl(207, 37%, 47%) |
| OKLCH | oklch(56.8% 0.081 243.9) |
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 #4B7CA3 | 4.45:1 | AA large text | Lc -76.3 | Fine for body text |
| Black text on #4B7CA3 | 4.71:1 | AA | Lc 33.3 | Non-text elements, placeholder text |
| #4B7CA3 text on white | 4.45:1 | AA large text | Lc 70.8 | Content text, not long reading |
| #4B7CA3 text on black | 4.71:1 | AA | Lc -30.9 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E4EBF0
oklch(93.6% 0.01 238.5)
-
Step 200
200
#CEDBE6
oklch(88.5% 0.021 243.4)
-
Step 300
300
#ADC4D7
oklch(80.9% 0.037 243.1)
-
Step 400
400
#82A5C3
oklch(70.7% 0.059 244.6)
-
Step 500
500
#628FB3
oklch(63.2% 0.073 243.4)
-
Step 600
600 (this color)
#4B7CA3
oklch(56.8% 0.081 243.9)
-
Step 700
700
#396588
oklch(49.1% 0.075 244.2)
-
Step 800
800
#2F536F
oklch(42.8% 0.063 243.5)
-
Step 900
900
#2A445A
oklch(37.6% 0.05 245.2)
-
Step 950
950
#192834
oklch(26.9% 0.03 243.3)
#4B7CA3 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) | #6B7CA5 | 0.039 |
| Deuteranopia (no green cones) | #6073A2 | 0.033 |
| Tritanopia (no blue cones) | #158589 | 0.067 |
| Achromatopsia (no color) | #777777 | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B7CA3
#4B7CA3
oklch(56.8% 0.081 243.9)
- #986C42
#986C42
oklch(56.7% 0.081 63.7)
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 #4B7CA3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Stormy Blue #507B9C ΔE 0.011
- Cerulean #457B9D ΔE 0.012
- Dull Blue #49759C ΔE 0.021
- Steel Blue #4682B4 ΔE 0.028
- Off Blue #5684AE ΔE 0.030
- Flat Blue #3C73A8 ΔE 0.034
- Cool Blue #4984B8 ΔE 0.035
- Metallic Blue #4F738E ΔE 0.036
Use #4B7CA3 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.